30 minute doll clothes on Sewing with Nancy. Lots of sewing techniques and tips in two episodes (including serger techniques). http://video.wpt2.org/video/2152365156 (part 1) and http://video.wpt2.org/video/2160358419 (part 2 - serger tips in this video)
How to Make American Girl Doll 18" Doll Shoes - New Vinyl Series. By Scoresheet1 on youtube. She has over 100 videos dedicated to how to make doll shoes, clothes and more. Free patterns when requested.