I'm very upset about this! This is where I edit all my headers and icons and, well, everything!!
I first found this out from Leanna at Loop-de-Loop. She has more detail, if you're interested.
So anyway, why do I post this if Leanna just did? Well, if anybody out there has another cool site they use for editing I would love to know! I need an editor for my headers and lots of other stuff! (Even my Facebook icon was made on Picnik!) So if anyone has a good editor please comment below and let me know! (or email at firstname.lastname@example.org, if you can't comment) I will love you for forever and a half if you do so. :)
(Who is taking advantage of Premium features until April 19th!)