Looks like he's riding a chopper
only joking off course.
I have dirtified your image to emphasize the following:
In general when blocking out your model try to adhere to the following guidelines:
Width of the body is 3 heads and the height somewhere between the 6-8 heads high, know I know that with a minotaur the head is relatively bigger to his body than a human, but I would still start from the proportions we expect to see as humans, it will keep your brain going from completely gaga by constantly adjustng width's and heights of the model...trust me I have been there
Once you have some basic detailing done adjust volume and proportions where you see fit, trust me on this...the model will improve drastically when you keep at this workflow