The worst part of the process for me is that all the cards have to have sentiments in them - I usually leave my cards blank inside for a handwritten note. The other hard part is restraint - my mother insists that a dollar card can't be TOO nice - no metal embellishments, limited layering, stuff like that. She isn't too happy about my use of ribbon, either. Sometimes a grouse at her and tell her she can charge more if she wants, but mostly I try to do it her way.
My mother is collecting old Christmas cards from her friends, and creating new cards from them, selling them for a buck each. She brought her stuff with her, and I have been having fun remaking these cards with her. It is hard making something that is really different and not just pasting the old card front on a new base, but here are a few that I think came out well: