You should ask and credit each artist you take artwork and chibis from, otherwise you're nothing but an art thief. People put a lot of work into those drawings, and they were not made for your personal use.
You were previously using my Blaire art I've been notified, and I'd like to tell you that you are not allowed to use any of the art I create for your signatures unless you were to commission me with real money to draw them in first place.