Tell me what you think...

No.
The signature seems stretched.
The lighting is very bad.
The lines you drew aren't blended into the signature at all.
The text is off, remember the rule of thirds.
 
Seems stretched and squiggly line around the person doesn't look good.
 
Stretched, and that just ruins the picture. Otherwise, it's good.
 
Echoes said:
No.
The signature seems stretched.
The lighting is very bad.
The lines you drew aren't blended into the signature at all.
The text is off, remember the rule of thirds.

The render is not blended.
The flow is bad.
It seems like you placed a render on a background, greyscaled it, and used pent tools.

2/10
 
Those colorful squiggly lines look too fake and throw off the focal way too much.
The text makes another focal because of bad placement.
It could also use a border.
 
Hi Heavenly!

I love the effects you used, however I dislike that the effects seem a little low quality.

All in all it's a nice signature, and you should continue posting your work!