Ok sorry I'm a little late, but I've got some feedback!
Alright so here goes:
-GUI translucency-- when applying shapes (such as eyes) it's hard to place the lines in the correct area because the white circles block the view. Would there be a way to make them more transparent, so we could see the photo underneath easier for lining up?
-Select photo-- I believe someone has suggested this earlier, but better navigation for photos would be a big help (either drag and drop or seeing thumbnails in the explorer)
-When navigating looking for photos, using mouse wheel both scrolls through the list and zooms in/out the background
-PNG export progress-- I realize it's in beta but it looks promising! Right now it seems to be making both the background and the photo/character itself translucent.
As I think of/find more I'll let you know!