looking at your photos your breasts are quite widely spaced. To get rid of this spacing you would have to go quite large and this may not be practical. Further discussion is called for
Can you get better cleavage?
From the 3 limited photos you show, I would rate your results pretty good. You show the gap between your breasts using your hand in the after photo, but it is just as important to realize how much space you have in the before photo. Your nipples were situated towards the outside of your chest, and the gap between your breasts near the bottom is pretty wide. This is all normal, and just how you were made. Larger implants, or a tightening of the pocket out to the side, or release of the pocket on the cleavage side may give you breasts closer together, but only a bit. The rippling could be from the use of textured implants, or the fact you are so lean and thin, or a combination of the two. There are so many combinations of manufacturers, sizes, textures and styles that it is hard to keep them all straight, but if you do switch, there might be a better fit to help achieve your goals.