For what's worth, I've been impressed by all the work you've put into this contest so far, and it be a shame for you to quit now. I won't lie, your mapping has flaws, some of them more obvious than others, but we learn for a reason. And it be a shame for you to leave this community. You do too much for it, and it would hurt us all for you to leave.
Maybe mapping isn't your calling. There's a good number of us here who contribute in other ways, whether it be modeling, greeting, or just being there for testing.