I've been intending to respond to this thread for several weeks now. One thing about writing, as with other creative endeavour, is that it can stay in the mind waiting for a burst like this. Even then, my response is an amalgamation of other conversations I've had, so in a way I've written much of this post months or years ago. Now I'm writing it over the course of just hours and I'll just have to make more posts as I realize things I've forgotten to note. My paragraphs are grouped appropriately, although the ordering thereof may be suboptimal.
I predominantly use Pregchan to host my stories, so I'm going to link to the two relevant threads, and then the posts containing the stories. I'd be grateful for any thoughts on them being posted in the second thread:
>>>/f/100>>>/f/14888>>>/f/10759>>>/f/10760>>>/f/11132>>>/f/11558>>>/f/12478>>>/f/13113>>>/f/14356>>>/f/15135I write pregnant My Little Pony fanfiction, so I don't tend to face some of the same issues others do, since anyone reading it is likely already familiar with the settings and characters. This allows me to focus almost exclusively on the interesting and unique details of the environment and characters.
What I stress first is focussing on the mechanics of the story, and not the dialogue. My stories tend to be light on dialogue, and I make a lot of it implicit to further emphasize only what I want to or can't reasonably avoid. I read a story someone commissioned which was dozens of pages of mostly generic dialogue, and I was astonished at how anyone liked it. I'm not going to link to it, but it has even had artwork of it made, and it was just a terrible story. There was little backstory, no real buildup, and it was just piling fetishes on top of one another.
Plenty of people probably think storytelling is for those who can't draw, but it's artistry all the same. Before I release my stories, I sleep, and then proofread. I've spent several hours contiguously, just proofreading. Never elide the proofreading; I've greatly added to some stories in this step, when I realized a scene could use something else, and when I was making the prose less generic. I wrote an eleven page story a few months back, and spent seven hours straight editing it. I spent around five hours editing an earlier story which was six pages, and made heavier and much more important changes than with the eleven page story.
Even with exhaustive proofreading, it's common to do it again later and notice another error or few. I intend to review my stories from last year and make any adjustments so I have an excuse to post them in the second thread I referenced. I'm an amateur linguist, and don't have any proofreading help, nor do I really use any automated tools; the only time I get any automatic help like this is when I put my story in another editor to typeset it, but it's very important to recognize that simple spellchecking won't notice when a word is spelled properly, when it should've been another, so I don't rely on it.
When starting a story, I tend to have a particular thought in mind which I want to describe in it, and this can be something as simple as how a pony struggles to get out of bed, to such things as magical mishaps leading to pregnancy or how a younger pony interacts with the mare.
I've thought before about why it is that drawings can be arousing without explicitly featuring anatomy or sex, but it seems most stories include detailed sex scenes for this. I believe it's the lack of focus on mechanics that causes this. A drawing can provide more than enough detail for the viewer to imagine things, and I believe a story which focusses on describing the mechanics can also do this. Few of my stories explicitly mention sex or particularly sexual anatomy, but I think they can still be arousing because of what I focus on. Compare this approach to stories which are mostly setups for sex scenes.
I produce PDF files, and presentation is very important. It's the difference between something that looks nice at a glance and something that doesn't, no different than with food. Proofreading is again very important here; when I read a story and see an amateur mistake, it really lowers my view of the work, especially if I were already deciding whether to continue reading or not. It can be unnerving to see all of the mistakes, but it's fine to write them, just not to leave them. Its not uncommon for me to correct several dozens of errors in proofreading. I don't feel I need to emphasize this further.
Discipline in writing can vary wildly. I find having a deadline for a group project I'm going to add my story to helps. For one of my better stories, I wrote a paragraph or two every day for three weeks, and yet I finished a different nice story in two days, because that's how much time I had when I learned of the project. I started writing a shorter story to get writing again, and it grew, and it's been over a month since I've touched it; it's almost finished and I just don't have the will to yet.
I read and write most every day, but I can't always focus on pregnancy erotica. The stories I've linked aren't everything. I took a break lasting several years, and returned much better than I'd been when writing greentext. If I'd not written and read so much in that interim, I wouldn't have improved.
Another thing to note is that improvement means most artists become dissatisfied with their earlier works. Even if the work were finished perfectly, the standards for judging them may be what change. I don't let it depress me, and don't suggest anyone else does either.
Here are some basic English rules:
Don't write "they" when a character's sex is known. Traditionally, the male pronoun is used when the sex is unknown, but I use the female pronoun in my stories because they're about ponies. I avoid plenty of English mannerisms that wouldn't fit, such as calling children "kids", because that word refers to goats. I also avoid mentioning "hands" in my work. Consider what English should be used for any stories. Don't write a high fantasy story and use idioms about technology or other things which don't exist in that world. Maintain the verisimilitude.
I don't use my thesaurus much, but I use it occasionally. Writing about anatomy without getting repetitive requires synonyms and metaphor, along with focussing on related anatomy and events. Learn a new word frequently, until this becomes too difficult to do on a daily basis. Part of the joy of reading something is coming across a new word, and having an excuse to learn it.
This is all of the advice I can muster for now.