Hey I'd like to say good job on these drawings, there's a lot of variety to your subject matter and I see a mix of sketching and study work which is good. But I can tell you're new to asking for critique because this is not the most efficient way to do it. When asking for critique you should state the goal of your drawings very clearly and ask for feedback on certain aspects. Take your first portrait for example, I could give feedback on the shape design, anatomy, proportions, shading, accuracy, hair, line quality, etc. So next time you ask for feedback, state what your goal was for the drawing and request for critique on THAT specific aspect. For my critique, I'll be focusing on your first portrait. The largest issues I see are the planes of the head and shading. You don't really have a good understanding of the planes of the head. The drawing is feeling quite structural which I like, you have somewhat of an understanding of the different planes but I feel like there are still some gaps in your knowledge. For example, in the left cheek you indicated a top plane and front plane. But the front plane is filled in with the same half tone which is incorrect. The cheek kind of wraps around the face, so the plane furthest from the light source is shaded dark (which you did correctly) but Im not seeing any gradation as the cheek turns towards the nose. You captured this gradation successfully in the forehead but failed to notice it for the left cheek. For the top plane you indicated, there should be a shadow on the left side as the cheekbone turns towards the right ear (away from the light source). I used the left cheek as an example of incorrect shading but it can really be applied to every feature in your drawing. To improve your shading, Dorian Iten has great videos on the Proko channel. I also recommend you study the planes of the head using the Asaro Head. https://www.artstation.com/artwork/GX3Ax1 That being said, even though you missed certain aspects the drawing still feels structural. There's a clear separation of lights and dark. And finally, you're using the correct tone to indicate and add to that structure which is really good. Edit: the image is really low res for some reason. Open the image, click the three dots on the top right and click open original.