You are right, in terms of pixel is small, it is HARD and difficult to put in small tiny details. Space constraint is one of the challenge of pixeling small things. I can see you tried working in that small space. When doing small detail, certain detail could be obscure because it is just toooo small for the avatar scale.
Regarding the round, and why I am so 'detail' about it Sometimes the detail set things apart, it is an identity of the said item. MY first instinct is that it looks to me like a symbol that Menewsha Baji short has. If not, it looks like a radar to me. Spider cobweb mostly curve INward to have that identity.
and sure, of course, there will be someone who can recognize that as cobwebs.
Then again, if you are satisfied, save me trouble to figure out ways to fix it.

As for that top, I like how you divide them into 2 pieces of fabric. Though I think there should be some design element at the joint under the breast. Ribbon? seam? flowers? frills? puffs?