u/Exact_Implement1276

Hey guys, I've just started really working on my biceps, I have really only done much for chest and triceps, but can you guys tell if I have a short or long bicep? What are the pros and cons to said options, and how could I make mine look good? https://ibb.co/QjHHf6jm

He is 7-8 months and 28 (??) pounds