Hi, I'm the Kindergarten Crafter! I'm an almost-grandma (Feb 2011) and former US Marine. The latter being low on the artsy-fartsy scale. Guess what, just like you, I suck at all things crafty! Or at least I think I do.
But here's the deal.
Just try it. If it's really bad, hide the evidence. Um, er, I mean re-purpose the result into something else. Just go for it. If I can do it, you sure as heck can.
And enjoy each day. They are gifts. And not guaranteed.