Thanks Nightwolf!
I find it very handy to scan the pictures to .jpg, and then put those in my project file in Premiere as placeholders on the track, and drag them to the planned length already as if they were the final clip..
I put them in chronological order of course, but on several tracks, one for clips that need special FX, one for stills, one for indoor stuff etc. This keeps everything very manageable.
It's quite a drag inserting a scene smack into the middle of a project, and this way you have all your lines worked out, so the chance of that happening are pretty slim.
Our mind is still the best thing when it comes to imagining, but when it comes to sorting and remembering every loose end, it usually falls short of what we'd hope.