nice

Aquí en Brasil también es muy difícil encontrar lápices Prismacolor, así que creo que me compraré el Caran d'ache Sketcher, pero aquí en Brasil es un lápiz caro (no sé si en España es igual) y su color es azul.

Yep

Hey Robert! 0.5mm is a great all around choice for a mechanical pencil, but you might find it limited in the variety of marks you can make with it. The wider the diameter of lead, the more variety of line you can achieve, for instance a 0.9mm mechanical pencil is wide enough to maintain a chisel edge for shading, or creating thick to thin dynamic lines, but its still a fairly thin consistent line. Theres mostly artist preference between a 0.5 and 0.7mm, but there's a noticeable jump from 0.5 to 0.9mm and up. I'm a big fan of 2mm clutch mechanical pencils to go along with a 0.5mm. It can give you a huge variety of line in one lead size. A 2mm lead is really close to the diameter of a standard woodcase pencil so you get a very close feel to a traditional pencil, you can bevel the edges on a sanding block to get a tapered point which is great for shading. The reverse end of the lead can also be sharpened in a different way to give you some options like a rounded/blunt tip for quick sketching, or sanded to a chisel point to get even more variety in the line. You can switch sides depending on what kind of line you need and only carry one pencil. Hope this helps!

Lay-ins are the light, initial sketch done as the first layer of a more complex and detailed drawing. Their purpose is to help guide you through the rest of the process, especially for proportion and placement. So, mechanical pencils can be useful for this since they work well with more precise linework that doesn't involve shading.

These eyes are cracking me up, so much fun, nice study!

These seemingly simple exercises are so important for growth! Work that muscle memory!