Why can't I make myself pretty no matter how hard I try?

Okay, so I have dirty blonde hair that's straight until it gets to my shoulders, then it flips up, but in the back it puffs out! I asked my friends for help but they say it's from wearing my hair in a ponytail, but it's natural! Also my face is round, my cheeks are chubby and rosy against my pale skin and my face is covered in pimples and no cream helps! I have eczema on my forehead and my eyebrows don't match the color of my hair so they look horrible! And my arms are covered in pimples that won't go away, and over all, I'm overweight! But to make it worse, every little cut I get leaves a scar! And I have insomnia so I have dark circles under my eyes! The only nice feature I have are my green eyes because my eyelashes are long! Please, somebody help me make myself look better!