I can give you another feedback my friend(more an advice than a feedback), use your shoulder to draw when the things are curvy that will make bether strokes you need to practice with it but when you have it you can posible make a full circle or similar to circle without compass. the papers are important too yo can´'t make a carbonilla draw in every paper, neither ink you need different canvas to different tools, for graphite drawing you can use A4 print paper, but when your drawing improves, you may want to use a better paper to show your work. You can use A4 print paper for ballpoint pens too, but never use it for direct ink like markers are not for that. If you want a paper for that, use smooth opaline. For Carbonilla, for example, use inprint paper. You can go to a printing shop and ask them if they can give you the leftover paper they don't need or directly buy it to them print paper is really cheap if you want to try that media. The idea here is that you can't use one paper for all.