I'm sure doing all these deep muscles is overkill, but I'm honestly having fun. Still struggling with trying to figure out which muscles go under others and which go over, especially for these deep muscles, but I'm hoping it'll all work out in the end. I do have a 3-D model of a facial ecorche but the deep muscles don't show, so it's not much help at this point.

Both of the muscles around the eye socket and the mouth start with "Orbicularis", which I'm guessing means something like "circular muscle", since they're both uniquely round (I haven't yet drawn in the muscles fibers on the mouth below, so it looks more smooth and skin-like -- I'll fix that next time).

Front view -- it looks a little off proportionally, but I think that's because I haven't put in the cartilage and muscles around the nose. Once that's in the nose will appear a bit lower than the nasal hole that's there now.