If you feel it on your biceps then you're doing something wrong. Try keeping your arms straighter for longer, use your back to pull the weights. It takes a while to get used to but you can really feel it after a while. It will feel like you're pulling your shoulder blades back when you lift.
Also, do some pyramid sets, 4x10 isnt too good, you want to start lighter with more reps and get heavier as you decrease reps
