I'm guessing you weren't really good at all the other crafts in the beginning either...so stick with it. A little more practice is all you need.

I read an article that said quarter inch is not the important bit, its having the seams consistent throughout the quilt that matters. So, if you make a mistake, make sure you make the same mistake on each block!!

It sounds to me like you are already a treasure!! Wow, if I could do half that stuff. Of course, I can't really quilt either. :)