To those who know how to edit professionally, you think you can give me some tips?

I use Photoshop CS6, and I know what everything does, but is there more I can actually do with them?

YouTube tutorials don't help me at all. And when I'm looking for something specific, there's nothing in the results. Even on Google!

If you can help me edit like this or this, I would LOVE you forever.

I especially need help with proportional edits like the first link. ;A;