If im being honest... It's not something I would use as a wallpaper, its too busy and does kinda look like a praying mantis or an earwig in a subliminal way.
Id suggest going in a smoother more minimal, less distractive direction, typically folks like a wall to accent a desktop, not overpower it.
Keep on trying and good things will happen and as far as walls go, don't submit it until its done.. final, your happy with it.