Exercise needs to pay attention to methods. The correct method can make you get twice the result with half the effort, while the wrong action will make you get twice the result with half the effort and get hurt easily. I suggest you find a professional coach to guide your movements and training plan. If the cost is too high, there are books related to it in the bookstore. Recommend a book called "lanyu Coach Let Men Have" King "Abdominal Muscle" ~ Cui Chengzuo (author) and Cheng Yun (translator)

I trained in strict accordance with the above methods, and my classmates were surprised. After a few months, I can have a clearer outline of my chest muscles. In addition, we have a misunderstanding that we need to do training every day, but it is not. Rest is as important as training! I have read many books that suggest this, about three times a week, because the muscles damaged during exercise need to be repaired and grown, so that they will be stronger when used again in the future.

The neck looks thick. You should practice hard. There is a muscle near the neck called trapezius muscle. Practicing too hard will make it too strong, so the neck will look thick. The book also suggests that this muscle should not be too developed. Big muscles have big muscle exercises, and small muscles have small muscle exercises. Muscle exercises in different parts are different and cannot be generalized. You can do as the book says.

I wish you an early success!