These are really good, Mr. Gir!

I tried changing the stroke to white just to see what it'd look like...



This one looks nice but I think the girl could use more emphasis. I'd go with Filter > Noise > Reduce Noise to get a really clear picture (like, all-the-details-in-her-eye-lashes clear) and then using soft light for more color contrast.



Good stuff ee. I like your backgrounds.
One thing I suggest though is that you save your images as PNG instead of JPG so you don't have artifacts all over your sigs!