It's not too hard, I've done my stainless boat wheel in a leather wrap, sorry no photos handy but I could probably dig some up..
Tips: I just bought a partial leather from a tannery nearby, and cut about 2/5i strips, although my wheel was about 700mm dia.
Then sewed them through my (albeit industrial) sewing machine, without the thread. This makes the wholes down one side. Fold it in half, and repeat down the opposite side, ensuring stich holes 'pair up'. Then hand stitch the end to make one loop, it needs to be tight because the leather will stretch.
Then some thin doublesided tape around the perimeter of the wheel to hold in place, fit the skin on and make sure it sits even and parallel.
$2 shop usually has an A4 page of mixed needles, you need 2 of the curved. Use the thickest upholstery thread (I had red V92) the sewing shop has, and you need to cross stitch using 1 long length of thread, with a needle on each end. Start need a spoke.
There's lots of vids online of how to stitch it.
Very rewarding, not much cost, and not really too hard, you just need a bit of time, about a 2 stubby job. Good luck!