Today's lesson will be making top River shot. I will follow show you how PS effects can be used.

Create new document:



So create a new Doc and a layer in FILES menu.
Add a gradient like this one:







Plus another gradient.



I've also decoded o put an effect ?> Filters>Distort>Wave. You can play with wave value as you like.

Use quick mask. Wanted to detail the center Blue wave. So press (q) a begin painting the areas with the brush.



These changes to a selection (tap q Once more to turn off Quick mask).