I'm going to write a decent post later about what I did specifically for my arms. I did have to try quite a few different things before I found out what put size on for me. However I'm fairly happy with the change in my arms in the last 2 years. Here's a comparison in the same shirt! My hobbies have changed, and so have my arms (can't do much about that ugly face though :-) LOL)
Some people draw, some people paint. I sculpt, and I've been working on this piece for 2 years.