OK so,  mrbitey pointed out the (stage)left arm was smaller than the right one!

I was a tad confused and assumed he meant compared to the forearm because the elbow is pointing "towards" us technically, BUT, now it's bugging the sh!t out of me 😂 and as you can see I've now bisected the shoulder so now the biceps should look more accurate irrespective of the forearm angle.

I didn't "want" to do this RIGHT this minute but once I see something I HAVE to correct it before the procrastination monster attacks 😆

Whew, anyway kids, always keep your references in an arms reach especially with buff borbs.