Depending upon the campground where you are staying, you may want to spend a bit of time and select that perfect campsite. We've stayed in some commercial campgrounds that are so full that you simply must take what you are assigned. But state parks, at least in Texas, will allow you to select your site after you check in. Please note that you normally aren't allowed to reserve a particular site; however, upon arriving at check-in, you can then request a specific site. If you are not familiar with the campground, this usually means driving through the campground(s) after checking in and finding an unoccupied site to your liking. After finding a site, we usually call the office to make sure the site is available, then set up the trailer. After getting setup, we return to the office to get a new tag for that site.
Here's a little trick I've started using as of late when we are going to a campground we have never been before. When planning the trip, I pull up a map of the campground. Many commercial campgrounds have a map online of their campground, and all Texas state parks have maps. See the Texas Parks and Wildlife website for access to individual campground maps. I then use Google Earth to zoom in on the campground. I can work back and forth between these two sources and get a short list of sites I'd be interested in, especially as regards direction orientation, shade trees, and space between sites.
Everyone has different things that they look for in a campsite, but here are things we consider.