#10 : is very nice. Make the headphones on the same color, try with white. The black borders are a little too bold. Can you make these a little bit smaller? You're on the good way.
#11: Yes, the black borders look better. The headphone is nice in white, could it be more rectangular? I think the shield on the backround will look nice too in silver, try to reduce the scale of "EG" just a little bit. I love the red and silver dots, what about adding some black stars on the left and right as a background? If it looks not good with stars, we can work with arrows, just try. Then maybe polish all this with an effect to push the render, but not too much.