I look at a lot of pictures and photographs from other web sites. It gives me inspiration. I love the edited pictures that pop out at ya like they were from a magazine, by everyday ordinary people..
They know how to use their Photo Editing Program/s. The Actions, Brushes, Shapes, and Overlays. I especially like the grungie/over exposed/surreal poster qualified renderings. They've really mastered those editing features, especially if they don't over do it.
So, if they know how to do all that just so.. why are their horizon lines crooked? Seems they'd get the feel for custom rotation wouldn't ya think? As common an edit can be. And I feel an important edit.
I hate it when a beautiful picture is on the screen and the water/horizon line are so crooked you feel like everything is going to fall off the page. YUK! Can't they see? I guess they're looking at the wonderful edit they did and not the whole photo. To me, it's the difference between professional and amateur.
What I'm really saying is, Please learn how to use the Basic Tools, before you master the advanced artistic edits.
Basic: Color, Composition, Rotation, Crop/Resize. STRAITEN IF NEEDED, and it usually does need it.