Regarding Weight line, I think first of all, you can do a lot of Line tracing exercice juggling between thick and thin line. It will ease your line when it comes to draw anything (especially if you want to rough something out , you can do so lightly) On your drawing, since you have a light source it important to stick to it. Here you have multiple decisions regarding overlap and shadows, I would solve one problem at the time. First you get to your overlap as you did it on your drawing. Thick line when overlapping other forms and shapes, thin when the form is behind. After that you try to reajust a bit here and there. Drawing the shadows, you can add more thick line (for shadows) and thin line depending where light hit your drawing. In here your light come from above and so I assume that almost every single faces that look down will be in the shadows. Hopefully this feedback serves you well. Don't hesitate to reach me on Artwod Discord @ Shadlow, I'll bee glad to answer your questions if you have more on the subject. Cheers ! | Artwod Feedback