Which one is better ? (1st CG) (Patreon)

Today I want to ask about 1st CG after I fixed image size. Previous is 1000x720(weird screen ) and when put in game. It has empty left-right because game screen is 1280. 

So I make 2 version of CG and want to ask which one is better because I can't decision by my own (I'm not good with muscle and don't ask me to practice and draw better penis -*- )

I attached zoom in & add minotaur's body version :