good for a first... add boarder, and try not to make the text stand out so much..
c4ds are also a great addition to any sig to make them look better... (c4ds are the 3d looking design things and such)

Good for a first try, here are some tips on how to improve it (if you use the advice make a v2 so i can see how well you understood the advice):

-Add a light source
-Less noise in the render
-Make the text stand out less but keep detail involved
-Add some more detail to the left (E.G Brushes, C4D)
-Add a border

First, try to remove all those filters off the render

do the above what they said ^^ also if you want to add details and such to the render i would duplicate it and try some new things out like gussion blur etc and try the different blending options and use the opasity by messing about with it.