ok ima help u out here man
1. take off those lines
2. go to image>adjustments>levels> move the one on the far left a little to the right, the middle one to the left a little and the right to the left a little.
that should provide nice contrast to ur sig ad lighten it up and bring the blending more together,

btw guys i do that with alot of my sigs, this dude who is a graphic designer showed me that