I also say 'go for it'. Yes, I have several favs that I have saved over time, and I always regret waiting. You can always admire the end result when you finish, and the pattern you choose will show off your fabrics perfectly.
From the way you talk, you sound like you need a confidence-booster, and you'll get one here. YOU can do it! You can accomplish anything you set your mind to. Good Luck!
Stephanie