Waist - both men and women (if men says they don't have waist or hips let's go with the side of your abdomen.)
Back line or just clear back (especially in drawing! It's importantly good)
Tattoos (I like both irl and in drawing like tattoos sketches are damn great)
Veins (any part of the body)
Thigh/leg wrist to your shoulder blades (idk what it's ...... reply