Cause your art follows the rule set I have in place and doesn't spam my inbox with hannibal fanart. I ain't really picky haha. On a side note, exposure is important. If I only put super top tier submissions in the featured list, most art wouldn't be seen. Plus the submission you posted ain't bad so why would I hide it? xD
Heres a piece of advice I got from my professors that may help you.
" Don't ever talk down your art. Sell every piece like it's the best thing you've ever made. Cause it's other people's job to judge it, not yours."
Keep working hard and making art you love. Peace~