>>47819542First of all use reference.
-The bone of the thumb stands out more than the other side of the hand, so theres is this bump on the flow while the other side is smooth
-mark the nods of the hand like if they are small tubes to help with proportion
-the fingers have 3 nods irl, but you can act as if there were just 2, it makes posing much easier
-if you don't have much experience I recommend not shading much, just a bit of reddish or darker color on the finger tips
overall don't waste too much time on this no one will see your hand (like you said)