...most of the people who leave completely unhelpful and mean comments on my design ideas seem to have no design ideas in their gallery at all?
Even for pieces I don't like, I at least leave something helpful for the artist to think about as opposed to completely bashing the piece.

If I can't do something right, help me. Tell me what I'm doing wrong. Don't just put me down. I can handle put-downs, but I can actually learn from information.

Thanks to everyone who's taken the time to comment on and score my designs so far. Hopefully one day my work will be good/pleasing enough to make it onto a shirt. Thanks again. :)