The tip is simple. Don’t do what you see above. Don’t go too far.
When people submit images for blind critiques on “The Grid” and we say “That’s some bad retouching…” it’s not that they don’t know the Photoshop techniques, or don’t understand how to retouch a photo — it’s that they always take it too far. Their eyes are “too white” – the skin is like plastic (see above) with no visible pores – everything is just simply too much.
If you want to have better, more realistic-looking retouches, you don’t need to learn some fancy new technique. You just need to do “less” of the ones you already know. If you’re fairly new to retouching, and you think you’ve got it looking about right, go and back off everything by about 35% and you should be “there.”
Hope you find that helpful. :)
P.S. Only 4-days left to save $100 on a Photoshop World 2017 Conference Pass using the early bird sign-up special. The conference is next month in Orlando, Florida (April 20-22, 1017). Tickets and more details here.