Not sure if this will help, but if you have an ongoing proyect, a comic or a game portfolio, you can use some of your concept ideas for these environments, since it's something you will have more investment in.
Generally it also helps to set up a perspective based on a reference, start with the reference, but modify it enough to something you might like more, like turning those city buildings into ruins, or a sci fi setting, or populate it with your own characters.
Or if nothing comes to mind, check a setting you enjoy and practice taking elements from that environment into another environment.
It gets a bit personal with your preferences, though these points have helped me have more patience with environments so far.
Just like with gestures, it also helps to set a time limit for yourself, and try to draw focusing on the key components with the time you set for yourself. For example, if you set a limit of 1 hour, or 30 mins, it will force you to focus on the key foucs points and lines (just like with gestures), and for practice doing 4 like these in 4 hours might be more beneficial than doing a single super detailed one that takes 4 hours.
It depends a lot on what you are going for.
