Guppy, he needs a smack too!
Sure you can learn on a simple skin, but you ask me? Bare metal is one of the HARDEST looks to pull off, ever. Might want to start on something painted, OD, or camo, or something.
Also, IMO, the first skin is always by far the hardest. You're learning so much. It helps if you *really* get a skin you love. Something you have a personal vested interest in finishing (so that when you get down, or feel you won't ever finish, you have that driving force to keep you on task).