Dayhawk, here's a tip about hands.
Hold your own hand in front of your face, palm down and thumb toward you. Note something which escapes the notice of many novices trying to draw hands: the fact that the thumb hangs lower down than the fingers. The thumb is not in the same plane as the fingers. If it were in the same plane, it would not be opposable. Note also that if the thumb juts forward when the fingers are also jutting forward to their limit, the tip of the thumb reaches no farther forward than the first section of the index finger.
Now turn your palm toward yourself and make a fist, thumb-side up. Look at the way your index finger curls up behind the thumb. Look at the little pit formed on top, then look at how each finger curves into place beneath the index finger. Lastly, note how your curled baby finger is not quite as far down as the low edge of your hand. All these positions are not changed greatly if the hand is gripping something slender like a flagstaff.
Over the years, I learned to be more attentive to the proportion of each little body part to its neighboring body parts.