The deltoids, commonly known as shoulders, are a relatively small muscle group that is not too taxing on the body to train and can make anyone appear wider and stronger overall.
There are three heads that make up the deltoids; the anterior deltoid, the lateral deltoid as well as the posterior deltoid.
From chest training and compound presses, the front delts are very heavily worked and tend to become overdeveloped when compared to the side and rear-delts. Thus, this does not have to prioritized very much in that your rear delts and posterior chain all work together to prevent muscle imbalances and keep your shoulder joint as healthy as possible. Overhead presses are just fine when training front delts.
When it comes to the side delts, these are likely the most important part of the shoulder as it makes you appear wider from the front in that they cap towards your side and enhance your v-taper. Side lateral raises work best to build this muscle and can vary in weight from individual to individual.
Lastly, the rear delts should be prioritized to emphasize shoulder health via face-pulls or rear delt lateral raises.
Try this shoulder workout (DUMBBELL ONLY) that you can do at home! [YOUTUBE VIDEO]