That's great, Robert!
One suggestion, a little one that will make a huge impact: smile
! Smile when you get photographs taken. Grin your ass off, in fact. People assess in less than a second, visually. One a primal level, they internally mirror the emotion they see in the faces of ads. That's why the guy using product X is always frowning and the guy using product Y is always smiling in product Y's commercials. They want people to associate happiness, solutions, and relief with product Y. The brain registers emotions first in the limbic area, it doesn't get around to reasoning from the neocortex until much, much later. That's why commercials are so loud, bright, fast, motion-oriented, and obnoxiously upbeat. Grab the limbic first!
I suspect your goal is to look tough to prove that vegans are such but, believe me, your muscles are speaking volumes--Don't interrupt! Your audience's neocortices will get around to figuring out the bodybuilding part of the equation in a minute or two. Right now, show them all how great it feels to be vegan, how happy you are in that lifestyle, and what a relief it is to be so healthy both mentally and physically. Be the happy "after photo" that folks will be automatically trying on in their minds.
Last but not least, you look so wonderful when you smile. You've got an electric one. It's easy to see your dynamic personality and enthusiasm shine through those pearly whites. Be magnetic, approachable. You're recruiting minds and bodies out there. Where the minds go, the bodies will follow. Make them want to follow you because they want to feel as good as you look. Aren't you having the time of your life? Show us!