So, where to start. I guess I'll go in order:
1) So I tried these brushes that I downloaded the other day..... such crap actually, I had to come up with a new one as with my two pixel brushes and here's the work with the new brush. I like it, you can add or reduce tone with it, as well as create highlights and shadows, well, yes, it's also pixelated, maybe I'll try to make a felt-tip pen or paints myself because the ready-made options on the Internet don't suit me.
2) Gradually I'm trying to move away from construction and focus more on forms (in short, I'm trying to build it all from my head) I know that I'll still use it, I just want it to take me 5 minutes instead of 25 to make small sketches like this.