by default, avatar crop redirects the user back to the "account settings" page, but on my site I've removed the "upload picture" link from the account settings page using the form filter module, and then provided a direct link to user/getimage on the profile page.

it wasn't hard to modify the link on line 288 of avatarcrop.module to redirect to the user's profile page, but being able to set this via a UI would be much better (i just know that I'm going to forget that I did this when the next security patch rolls out).