This describes pretty well what usually happens
Especially young people are very proud of anything they do the first time, they want to share with the whole world, and to be admired by the whole world, regardless if some don't like it.
Then they get upset very easily if this is the case.
And the reason for dislike can be very little, e.g. just a wrong color, or can have psychololgic reason, like it is something the other person also had in mind alreday, but was not able to do herself.
The best advice is to continue working on it, but not to show every little crappy step to the public.
And if something almost useable is there, test it as good as you can before, eventually with a closed group.
You cannot test everything, that's sure. At least try to fix the things which are very annoying.
Especially with a complete environment, it is certainly not enough to provide a few textures like a mod, you need also lots of models for items. So the work is a huge lot more, and also the expectations are much more.