I've got some images which I would like to add to the collection I use for my sig.

All the images I currently use (clicky if you want to look at them all) are Photo Booth jobs.

However, the ones I want to add to the "library" aren't. They're just normal photos. Full colour jobs.

What is the easiest way for me to get them looking like the ones I use at the moment (I want to keep a theme for my avatar, you see)??

I've got zero experience of digital photography btw. I'm a photoshop/gimp n00b so simple instructions/pointers would be great!

Preview has quite a few tools that let you use the shared graphics routines from iPhoto.

So, you could dump the photos into iPhoto and play with them (it's surprisingly good for free), or do the same in Preview.

I'm not sure those paragraphs made total sense...

*EDIT* I was typing total balls. iPhoto is the one I was thinking of, not Preview.

Cheers Heather, I'll check it out!