There's a million ways to do any of these. What they all have in common is that they are very far removed from any "original", so it would list a pretty long chain of operations.
In other words, you're asking how to give a complete explanation of Photoshop's functionality in one paragraph.
The best advice I can give is to start by visualizing what you want. In my own experience, reverse-engineering what others have done isn't very effective learning. Finding ways to achieve what you want is much more effective.