Why wouldn't your other ones be "serious"? Work on your text, coloring, compo, etc. But for being a "first serious" signature, it's not too bad.
everytime you use a border a kitten dies.....def get rid of border it does nothing but disrupt any type of flow and constrains the focal also work on depth
not bad, lighting's too strong, and I use borders all the time, not all the time, but all of the time sometimes. Although, I wouldn't just slap on a pixel border that doesn't complement the sig.