The Top one.
I'm not a fan of the double exposure of the focal. I can see what you trying to do but the way that it is currently situated is distracting. Maybe try breaking the clipping mask into smaller sections. As for the blending, the edges of the focal seem a little blurry, try not smudging/blurring the focal when blending. The white border is another really distracting thing in this signature. Try replacing it with a black border to give it a sleek and elegant look to it.
For the bottom one, it's seems to be over saturated in my opinion. Try lowering the saturation on it so that colors are not so blaring? Also, her face seems extremely white, try to lightly use the burn tool on it to darken her up a little. As for the focal, she seems a little blurry so you might want to try and sharpen her up just a tad.