I never thought to find pictures that correspond with my characters. I may have to try that one. I do write character descriptions and keep a master character list. I also do research pretty much as you do and keep notes and printouts of different aspects of the culture, etc. I don't typically outline, but I do keep a running plot summary by chapter, and a timeline of the events to ensure it all adds up chronologically. Oh, and I develop maps of the country, world, etc.