You could post all of your pics in a journal thread and put a link to it in your siggy space. The journal area is a nice feature of MFF and IS. You can start a thread on it (one per member), and only you can post on it. You don't have others Hijacking it or posting their congratulations on it. You could link to it in your signature under your posts and anyone who reads your posts will have an opportunity to click the link and go straight to your journal.
I think this is what you are after?
MFF journalsCheck out what others have done, some members have very interesting journals.