Nice work there i see. Hows your left and right coordination improve now? Can it lift at the same time?

well then, do workout to strengthen your wrist and forearm. try wrist curl and reverse wrist curl using ez bar with light weight.

Only 1 set of db bicep curl?

well for biceps i dont like to use the machine. for me, machine helps you a lot. so i more to a more pure weight. for me i do, barbell biceps curl, standing dumbbell curl and ez bar curl. choose your weight well and you will grow it in no time. no need to rush to a heavy weight. progress slowly and you can see the progress and in the same time prevent injuries.

Dont use your body momentum or your back to help you lift. Just use your arm.

Try to not too. Whenever you feel like you are in need of support, instead of using your back momentum to support you can slowly let your other hand to just hold it or touch it and push it slowly.

Current stats?