Vanogay, Let's hope your doctor doesn't read the Quilting Board! S/He'd be upset about how much you're using that broken arm! Ouch! (How'd you break it?) When does it come off?
The pattern above is actually really simple. And can be even simpler if you choose just two colors (I chose something like six). The hardest part is figuring out where you want which colors to go. But you definitely want the pattern because of the precise measurements you need to make to cut the squares and triangles.