TUMBLR ATE THE ASK WHEN I SAVED IT AS A DRAFT SO IM SORRY IT WONT NOTIFY Sorry for taking so long to reply! If there is ONE thing I need to stay with you from this, it's study your own body. Its the fastest, most accurate, most easily available way to study anatomy. Crouch, touch your shoulders, hug your legs, raise your arms above your head and try to notice the differences in size between limbs. Put your hand on your face. Look at your reflection in a mirror/window. Especially since we are talking about proportions, those are about the same in all bodytypes and need just minor tweaking to get the feel of a different build. And if you dont draw your bodytype, who will? Disclaimer: I'm very honoured you asked me for tips, but I usually dont think abt proportions, since I internalize the things I learn by observing, so its a bit hard to put into diagrams. I will do my best!

Since the ask is pretty general, I just tried to give the first advice that comes to mind.

When drawing the body standing up, the top of the hip is the middle of the entire height. Also when standing, the elbows would align with the waist and the wists with the crotch.

Try touching your shoulder with the hand of the same side. The forearm is shorter than the upper arm, but combined with the hand it exceeds the length. Same for legs (thighs are the longest part) when the foot is pointed down. When you measure from the base of the foot though, the knee is around the middle. When the arm is held above the head, it can bend at the elbow around 90 degrees and then it will touch the top of the head with the forearm. A hand will take up the face of a person, from chin to eyebrow tips, but hand sizes can be pretty varied.

The bodies can have different muscle and fat masses and be exagerated, but the ratios above will still be about the same.

Also when drawing sitting down and hollding the legs , I've found its easy to kinda align the collarbone with the top of the knees (this works because the spine is bent so the torso has less length than when standing). The tips of the limbs (hands and feet) can be exagerated a bit bigger if you are unsure (or just want to) and they still look correct, whereass being drawn smaller makes them feel off.

Personally I draw hands MUCH bigger than I should because I like the way it looks, it is very much not the right proportion. I also tend to stretch the bodies much more, but it is very important you understand how bodies work and what the proportions are before you start stretching and exagerating the limbs. This is already my interpretation so studying real life is better still. I hope this makes sense, I'm bad at explaining Thank you for the ask, and have fun creating💚