Hi Nael! Good job! You should be especially proud of the butt XD. It feels solid and three dimensional! Let's see what we can do to improve the drawing :)   Value control: Make sure you're certain what's in shadow and what's in light. Controlling values is important. When an object is in shadow it will have a lower value, in light, a higher. In your drawing some parts that are in shadow have a light value, and some that are in light have a shadow value. This creates confusion. Parts turned away from the light look as if they´re turned towards it and vice versa. Our brains can´t tell how the part´s orient in space.   To practice getting this right I would recommend doing studies with only two values. One light value and one dark value. I think you'll enjoy the exercise. I do :) Because the studies end up looking really cool due to the high contrast. If it feels tedious having to do the underlying drawing, feel free to trace an image, since your focus is shading in this exercise and not figure drawing. When you feel comfortable with two values, you can start adding more values, until you eventually reach 5. You'll never need more than five   To get the values right try squinting. When you squint, the dark parts appear darker; the separation of light values and dark values becomes more obvious.    But sometimes, deciding what parts belong to the light and what parts belong dark values can be tricky. Like the back of his left thigh. There is a cast shadow on it so we know it´s in the light, yet when you squint the whole thigh groups with the dark values. In this case you could choose to either:   1. Think of it´s form. We know that the back of the thigh is facing the light since there is a cast shadow on it, therefore, give it the light value. 2.Think only of values. When we squint It looks like it belongs to the darks. Give it the dark value     Hope this helps!