You should probably start over. If the base reference image isn't good, then neither would anything built from it without corrections.
If you're having trouble memorizing anatomy, why not look up anatomy references as you draw? At some point, you'll naturally and automatically remember some parts because you've done it so much. So you don't need to emphasize on memorization nor stress out if there is ever a time where you forget.
If you're having trouble memorizing anatomy, why not look up anatomy references as you draw? At some point, you'll naturally and automatically remember some parts because you've done it so much. So you don't need to emphasize on memorization nor stress out if there is ever a time where you forget.