There are two ways to go about it. You can take a compass and draw a perfect circle and make two perfect eyes as neat as can be. Or you can do it freehand and have some fun with it. Like I did. Give it character.
I think there's a tendency for modern man to become dominated by gadgets and machines, taking us further and further away from the things I've been talking about.
Now being upon the haunches (as he necessarily must be in this case) is it impossible but he must be light in hand, because no horse can be rightly upon his haunches without being so.