Always remember practice makes perfect and even if it doesn't make things perfect, it certainly makes a considerable difference. I always thought I was a mediocre designer, now I am an improved mediocre designer who is continuously learning amplitude of things. So don't get discouraged if you're not pleased with your work, let it be your motivation to aspire to be better.
“Only as high as I reach can I grow, only as far as I seek can I go, only as deep as I look can I see, only as much as I dream can I be.”
~ Karen Ravn