If you're 18 years old it is highly un-likely that your penis and/or testicles will get any larger. Indeed, when you get to be middle aged they will begin to get slightly smaller and will continue to do so for as long as you live.

It is your genitalia you were asking about isn't it? Your body will almost certainly continue to grow for a few more years. You probably will not get much taller, but you will fill out.

Now about the size of your penis. From what I can see in your photos, it definately looks larger than average. Be proud of it.

Your photographic skills leave a lot to be desired, however. Poor quality image, poor composition and poor lighting. A fine looking penis such as yours deserves to be photographed better.