They honestly look little like Remilia and Flandre - maybe a last-minute change from the artist? However, it's a beautiful picture both in the subjects and in the exquisite background, so I can let it pass.
I like the generously sizable marzipan lumps that Flan is presenting there. I could knead those for hours. The little round nose glasses don't suit her well IMO. Interesting style no less!