Have you ever noticed a slight sideways lean to your images? Or perhaps that they are not perfectly aligned with the horizon or a vertical line in the frame?
Well, don't feel bad, that is a very common flaw in photography, and there are several ways of correcting it.
Getting It Right First Time
The best option is to get your photo straight inside the camera instead of adjusting it in post-production.
The number 1 reason why is because once you start tweaking the angle with the cropping tool, you lose some of the edges of the frame, and sometimes those edges are important for your overall composition.
The easiest way to achieve straight lines is with the aid of a tripod, or a bubble level (or both), the more the merrier.
What To Do When You Don't Get It Right The First Time
In my case, I have a big problem because my genre is street photography, and everything happens so fast that I regularly fail to achieve straight verticals or horizontal lines.
If this happens to you regularly, don't worry, there are a quick couple of post-production tools in Lightroom (and, of course, other RAW developing software as well) that will straighten out the lines in our compositions.