Mmm, sorry for late response i had to go AFK for a bit.
It's okay but you need to put a lot more effort into your sigs and more time.
A lot of your sigs look incomplete and novice due to lack of effort and time put into ít.
Perfection takes time and practice.
Try some c4d's on the side or just a nice background which well remove the negative space.
The rest is good though.