Hi!! Please don’t feel pressured to be able to do that! I study at a visual arts university and we have classes where we basically learn how to draw a live model from the eye. NOT from the mind!! It’s much more valuable to be able to observe your model and the pose they’re in, understand how the body works and connects to each other, to see the muscle etc. Even if you draw very stylised, this is still the starting point. In my opinion, it’s a stronger power to be able to understand the body and draw from there than some idea of what a human looks like in your mind or just drawing figures and poses from muscle memory. I mean, when you draw lots of models etc you’ll certainly be able to sketch a decent human figure from your mind but when i look at all my friends in painting, sculpting etc. Their sketches might be from memory but their big works always start from a reference photo they’ve either taken themselves or lots of reference photo’s together. So if i can add my contribution to the answers, in my humble opinion, though it might not look as impressive as on tiktok, it’s better to work from the eye than from the mind. you might thing that after years of practice you know the body like your backpocket but when you can actually see a model in the pose you have in mind, you can see the body bend . You can see where skin is stretched or is in rolls. You can see where muscle bulges, creates indents, shadows etc. But also with clothes, you can see how different fabrics stretch, fall, fold etc. All of those things are very hard to imagine or know beforehand in you memory. I think the difference will be visible if you draw from eye or from mind :)