that is how you get above 2000 words. you're doing it right, you're just stopping too soon. honestly. just write crap and then put it away for a day or two, then look at it and pick through it for the good bits. do it again. read some good stuff while you're at it, including stuff other people say is good but you don't like at all. staring at a "classic of modern literature" while thinking "i wouldn't let my dog read this" puts things in perspective. trying to figure out why it's "good" will kill some time you'd just use feeling bad about your own writing.
back in the dark ages, i was taught (by a guy putting out his 22nd best seller that year) that, back in his day, he was told that a writer needed to write 1,000,000 words of crap before they'd start to get good -- and the catch was that one never knew where those 1,000,000 words were going to fall. the positive side of that was that most of them were going to come at the beginning so it was best to just get them out of the way by soldiering on and learning on the job.
if you're at this stage, just accept that you're going to be uncomfortable and it's going to be horrible word vomit. that will not be true about it all but you're going to feel that way and you have no idea what a good thing that is for becoming a better writer.
i've been a slush editor. that means first reader of anything sent to a publisher for consideration. i have had in my hands some of the most batshit confident dogshit prose known to humanity and i have sent it back with some polite notes (usually because one of our regular writers knew the perpetrator writer in question) only to have the person either tell me it's perfect and i'm insane or to have them enthusiastically submit...exactly the same kind of dogshit prose while telling me they took my notes to heart. no ability to know that it's bad or why.
find what you did right, stick what you think you did wrong in a time-out folder, and keep going. for fun you can do things like write the end first, write a whole story as a chat log, write it from the point of view of the cat in the room, write it as though it was a news release, whatever you want. the point is to write it, to get good at feeling bad at it, and to learn the difference between what works and what doesn't.
you're fine. you don't owe anyone good writing but, if you want to feel good about it and write things other people think are good, the only answer is to keep going.
