here's what i did:
duplicate background.
correct lighting with contrast/brightness adjustment layer.
copy merged layers and paste to new layer.
on this layer i made an 'edit selection' and masked out the eyes, nostrils, lips, ears and sweater. i changed this into a selection and inverted it.
on the inverted selection i ran the 'light' setting of polaroid's dust and scratch remover.
i inverted the selection back andi did another 'edit selection' on this and included the jacket as part of the mask. changed this all back to a selection and inverted again. on this i ran the polaroid D&S again, but on the 'dark' mode.
i then duplicated that layer and ran 'clarify' at a setting of 2.
duplicated this and ran a usm at 2/100/5.
added a new blank layer and did just a tiny bit of clone to touch up a few areas.
copy merge and save as new layer and done!
this was a fairly simple restore. and if you notice, there is no ONE tutorial that anyone used. they all were slightly different. some used noise reduction while others used polaroid's D&S. i used a usm filter while someone else used a high pass. so, there are similarities, but none exactly the same. it's a matter of knowing your tools and what they do and then practicing with them... a LOT
you did a fair job, but you need more practice. looks like the clone got away from you a bit. that's one of the hard ones to learn well, but it's also one that needs to be mastered for this kind of work. and this piece doesnt really need a lot of clone or smudge. so, if you're going to continue just keep studying the tools and practice, practice, practice!