If anyone pays $20 for it I will be very surprised.
On topic - It really needs a lot of work done to it. There is no depth to it, everything is at the same level. Read a few tutorials, get better, then improve it.
Overall, I will give it a 1/10.
Remember, practice makes perfect.
I wish you luck, and hopefully in a few months, I will be checking back here, and you will be creating at least semi-pro designs.