Image from Craftzine
I've wanted to try my hand with darning: socks, sweater elbows, jean knees, etc... and have finally found a tutorial I'm interested in trying. See this Craftzine Blog here for the full tutorial.
I plan on reinforcing some threadbare elbows on a black sweater I retired last year. Perhaps bright orange embroidery thread? Maybe hot pink? We'll see, won't we?