I got a lot of skills from sitting down and staring at artwork I liked and copying it for my own practice, its honestly what those art classes are teaching you to do.
Keep doing your class assignments for a solid foundation, its important and makes the difference both for getting rid of that "unknown something wrong" and the problem of taking too much time to draw a single picture.
Funny enough I think vore and lewd things is actually a good motivator for drawing more, haha. If you want to get to actual vore, save pictures you particularly like, stare at it and study it the same way as your classes. Ask "why does this look good? What techniques was used?", try and work backwards the process they used to achieve the look. Even better if you have timelapse videos to study. Try copying parts or the entire thing for practice. I hope I don't need to say to
not copy and post these practices as your own too. (Also I feel like AI is going to be tempting to use as references too and I would say probably don't do that. AI art blends up disciplines and styles like a garbage disposer, it'll be confusing and a terrible reference if you actually study it for more than a minute.)
I've seen friends start from scratch drawing and get comfortably good work within 2-3 years with just casual practice, and selling commissions after 4-5 years. Its like playing the piano, it takes time to progress out of "thinking about every stroke you make".
-Use real life references for anatomy. You can find nude references all over with a little bit of searching.
https://www.human-anatomy-for-artist.com/-Don't believe that you have to draw everything from pure imagination to be a 'real' artist, thats poor practice. I use PureRef to have dozens of other art and photos and inspirations open most of the time when working.
-The "art skill versus perception" cycle (see the attached image) is going to be very rapid starting out and slow down the longer you draw.
Good luck, anyone can draw :3
