Oooh, he's lovely! I never realised how lucky betta people are with photos until I got my convicts- they don't pose at ALL! It's so sad for me not to have a show-off fish anymore . . . your boy is BEAUTIFUL! Makes me want another one soo badly, lol!
Take about half hour, set a nice comfy chair next to the tank or put a pillow on the floor if it's to low for a chair, tape a mirror to the side of the tank, gather your patience (trust me, you'll need it) and take picture after picture after picture..... I usually end up deleting about 2/3 of the pictures that I take.
He's a perty boy! Love his colors!