We don't give individual feedback unless absolutely vital. For every project, we release a highlight reel that showcases our favourite work, usually based on direct feedback from the brand. This is a great place to get an idea of the style and content required, but requires a little bit of self-analysis. We send it a week or two after the deadline.
Check out V-Mag, a digital space for articles that help motiongraphers and filmmakers make the most of their work. There's some great tips on individual tricks, as well as some handy notes on how to organise your files (etc.) to make the most of Vidsy.