In general, I think how messy some of the pixels are really enhances the aesthetic, but I definitely smooth out that outline. As it is, the piece looks kinda WIP-ish. The center piece is iffy too.
The rest of it reminds me of historical japanese art pieces; it's probably the branch and flower. The flower you feature in the preview is really nice, though mismatched.
With some refinement, this could be a really cool piece!
Yeah, even I'm not sure I like this piece. The outline and centerpiece are bugging me, but I know dogwood flowers have that sort of center; if it'll look better I'll ignore the innaccuracy and get rid of it.