I Am 20 an my Breast Size is 40B I Want Make my Breast More Bigger So What Can I Do for It ?

To me it appears from your picture that your breasts and nipples point downward, and are already fairly large.  I think that simply increasing their size with implants alone would make this more pronounced.  It is likely that you need some type of breast lift more than you do augmentation with implants, and I suggest that you find an experienced board certified plastic surgeon and have a thorough consultation so that you can learn about all of your options and what you can expect from each one.  Good luck.

 

The photo does not give a full look at your breasts so it is impossible to state for sure.  Thus, you need to go see a plastic surgeon and get a full consultation and recommendations.  Your breasts appear to be quite large already and I do not believe implants are going to be the proper answer.  You may benefit from a lift to reshape them and need proper guidance about your options in person.  Good luck!