Nice! This is very good. If it makes you feel better, I feel the same way about mine. I want to keep fussing with it, but it's not getting any better. 
I'm happy to give a few notes, if you want, but I wouldn't call them mistakes. The sky is very blue, was that the way you saw it? The red might be a tad intense. The only obvious thing I see is the lit portion is bulging out which gives it the appearance of a polar ice cap, or some thick ice on the surface. The moon lost a bit of its roundness there. Maybe you could use a compass or some circular template to get it round?
What part of the eclipse was this? As totality ended, I saw this gray/violet transitioning to the still reddish, fully in shadow section. That is my second sketch. The first sketch is before totality, and it looked very different. The darkest band was right at the shadow line. In fact the banding was pronounced and looked artificial in my sketch until I toned it down.
Thanks Will! I didn't see a blue sky. The sky I saw was basically a dark gray. I wanted to try something different there. I do sincerely appreciate all of your comments. The out-of-shape (non-circular) moon was a mistake -- in need of fixing. Thanks for pointing that out!
I observed the eclipse using a small pair of binoculars. My sky was mostly cloudy, but the moon was in a clear area until about 20 minutes into totality. My rough sketch was very rough, noting a much brighter/lighter-colored region in the north (but I may have made it too bright and devoid of detail in the painting). Also noted (when observing the eclipse) was that the limb region around Grimaldi seemed to be a bit of a brighter orange or orange-red than its surroundings. This was in the early totality phase of the eclipse.
Some other things that I've noticed in this painting that I'm not pleased with:
That brighter northern region should be a bit thicker -- extending a bit farther southward with a more gradual transition into the more orangish part of Earth's shadow.
In some areas my transitions between darker and lighter parts of Earth's shadow are too abrupt.
The ocean/maria edges are too sharp in many (most) places.
Copernicus and some of the other brighter patches are too bright.
In general, I'm not happy with the colors that I used on the moon, though I realize that it can be OK to purposely alter such things in a painting.
Then there're the lunar details and being consistent in the level of detail over the visible lunar hemisphere, with due account being given to Earth's shadow being darker here and brighter there.
I'm quite inexperienced in acrylics, and this is my first painting in several years. But I hope to gradually pick up the pace in the near future.
Meanwhile, I'm open to more criticisms/suggestions -- from anyone!
