Being tall is tough when your trying to put size on. Even it you do put some size on the length of the muscle makes it look like nothing is happening even though something IS happening.
DO NOT train arms heavy, that wont do anything. At least not right now. Train them lighter with high reps, 12-15, and do you reps slow. Getting a full stretch and a full squeeze. A trick to get a full stretch is to contract your tricep at the bottom of the movement. Doing this ensures you bicep is fully stretched. And when you bring the weight up there should be NO swinging or movement of the elbow OR shoulder. Take BB curls for example, when doing them you will notice that if you standing tall with your shoulders back you will only be able to get the weight about half ways up (forearms parallel to the ground or slightly higher) squeeze the shit out of them at this point, that is fully contracted. You start lifting the BB higher and now your using delts, or lower back to bring the weight up.
You also want to hit you biceps at different points of the strength curve. You want to hit them where they are weakest first (fully stretched, and fully contracted) then hit them in the mid range. The mid range is what most people hit for every single exercise they do. Bb curls, DB curls, hammer curls etc.
Try something like this.
Standing double arm cable curls (pulling behind your head) this hits the bicep at its most contracted state.
Incline DB curls, this hits your biceps at the fully stretched state
BB or DB or concentraion curls, these hit your biceps at midpoint of the strength curve (where you are the strongest).
And dont get stuck in the same routine. Switch it up. There are variations of all these exercises you can do, so do them. The worst thing you can do is the same thing over and over and over again.
Also get some light DBs or a band and do little feeder workouts every night. Do 100 reps of VERY light weight ever night at home to swell that muscle up, and pump blood and oxygen into it. Dont do this to tear them just enough to get a good pump. Bis and tris.
Thats a run down of the biceps Ill post up one for tris when I have some more time later today
