First, make the groups more easily accessible on the home page.
Second, make the verbiage a little more accurate for the page ("Submit Proposal" sends to you the page you can create a proposal and "Create" submits it).
Third, I'm not too sure I like the light gray background on most of the child controls; it looks so WinForms era. I don't have a better suggestion at the moment, though.
Fourth, tell me the password requirements straight off, like you do the markdown requirements.
Finally, let me upload an image with my post, or at least link one to it.