enough time you can leave the dough to dry out on the table, because it can rise in oven and arise air holes in the place of connection with pasteboard.
4. After it baked you can paint frame with gouache painting and then leave it to dry out.
5. Cut out the door from pasteboard for picture pasting and cover it with scotch tape.
6. Make small holes by contour with drill and thread a decorative braid in it so you could hang it on the wall later.

This is the kind of hand-made present you can give to your beloved on Valentine's Day. Good luck.