What is the largest file I can upload?
Right now the sky is the limit (well 4Gb to be exact). But large files take time to load, and if those selecting candidates are not patient enough, they may skip your submission. We try and compress where we can, but this could lead to quality loss, so best submit what you feel reflects your work best in the smallest possible format.
Our guidelines would be that:
No larger than 5mb
Embedding links, such as YouTube and Vimeo, will save time
Keep below 20mb