Be sure to adjust gradually in the future exercise, especially to strengthen the right hand load during exercise.

Whether at home or in the gym, you should pay attention to several shoulder movements.

Dumbbell stand upright and lift sideways: Hold the dumbbell with both hands and stand upright and lift it horizontally.

Head-back dumbbell press: sitting dumbbell press.

Note: The above exercises are all aimed at shoulders, and your targeted exercises will definitely be effective. Pay attention that the right hand is heavier than the left hand, because you need to improve the circumference of the right side. The muscles on the shoulder are obviously deltoid and trapezius, which is the width or thickness you said. 8- 10 times in each group, 4-6 groups each time, and the interval shall not exceed 1 minute. If you want to practice thicker on the right side, you need to carry more weight and less times. As long as we can step by step and persevere, we will certainly have results. I hope it will help your exercise plan! ~