You look great! eh you don't need to get bigger. You can work on detail now.
I am working on detail... making my arms match rest of physique. I won't post it but have pics where arms are like matchsticks beside torso; quads/hams/glutes are prob strongest area and then calves go and let it all down too.
For arms to look big overhead, as in FDB or RDB (not ab thigh) they have to be fucking huge, possibly disproportionate.
I won't use SEOS but I think the above (disproportionate arm size needed for arms overhead poses) is a major cause for them.