Concept LoRA for T-Pose and spread arms Might be lightly undercooked so I recommend adding weight to triggers if pose is stubborn.
Works from front and behind. From side not so much, but you can still get interesting pose with hands in front of character.
LoRA weight : 0.8-1
Main Triggers :
tpose, t-pose
spread arms
Secondary triggers :
standing
full body
outstretched arms
looking at viewer
from behind
watson cross
legs together
from below
from above
angle shot