I always start with my images first. Then I go from there for including the papers, embellishments and such.
In some of my past kit swaps I have tried to coordinate things so they will mix and match and give options.
I always get hung up on embellisments and thats what takes me the longest to figure out. This could make a good spin off chatty topic, Daniel! Maybe how we go about planning cards or projects, and/or how we purchase things.