Visual inspection of the middle bundle of pectoralis major muscle is slightly effective, and the upper bundle needs to be strengthened, which can be improved by tilting the dumbbell bird. At the same time, it is assisted by the flexion and extension of the parallel bars arm (that is, supporting the parallel bars) to repair the chest contour.

As for the waist, from the photos, you are not too fat, so you should increase the amount of aerobic exercise and reduce the fat in your waist and abdomen. Then I suggest you contact your back muscles more (you can use pull-ups), which will make your upper body more coordinated, your waist thinner, and also set off your chest lines well.

I hope the above answers can help you.