Good progress bro, your shoulders look amazing. That happens to be my weak point. Moved them to the front of the week in order to specialize them a bit. I recently started doing negative's on the preacher bench for biceps, received great results from it. Also try this superset, it helped me to bring my biceps up:
A1. Preacher Curl Machine Negatives 4x5
A2. Reverse Grip EZ Bar Curl 4x10