Craftable Leather and String

I got tired of hunting cows and spiders. So I took my stacks of useless zombie flesh and made a mod that uses them.

Cook zombie flesh to make leather strips. Combine 5 leather strips (in an X pattern) to make an item of leather. 

You can now take an item of wool of any color and spin it into 4 string. If you want, you can turn the 4 string back into wool (white only).  The recipe is shapeless, just requires 4 of the 9 spaces filled. 

Simple and to the point.