There are... ways
Effort:2/2 sure
Looks:2/3 One tip on text is to try not to put it in the corner, it usually takes away from the sig, especially hockey ones. Try putting it somewhere close to the focal point (usually the render's head). Try using more stocks, play around with different settings when placing them. The blending isn't bad, the stock you placed over was a good idea but if you notice there is a stark difference from where the stock is over the render (it's been erased) and everywhere else. It takes away from the blending. Rather than tutorials just post your sigs on here for tips and look at others you've seen, try to eyeball them and take away what you want to add into the sigs you make
Creativity:1/1
final: 5/6
Total:5/6