Chicken looks great!
Couple things I like to do.
I use the beer can 3/4 full.
I like to heat the beer in a sauce pan with spices then put back into the can. This way the beer is already hot. The steaming effect can take place right away.
Air dry the chicken overnight in the fridge with the skin salted so it ends up more crispy
And use higher temps so the beer is able to steam the interior of the chicken.