tl;dr

Just picked up a few lines cuz I'm lazy. But from what I could see, here's my opinion as someone who had his time with photoshop and this kinda stuff: Signatures with lots of visual appealing stuff on it will never blend well with text, because there will always be too much color, making it 'impossible' to make a text viable. It could only work a little better with small text with a font that follows the flow of the signature and has its principal color in a darker tone.

But anyway, your style is pretty good already. No one is demanding a piece of art to score #1.
Also, the transparent Logo(without white background) looks much better.