Derwent Drawing

Is the sketch mild, medium or hard all technical designer better to attract people realistic? (With the mixture)

Personally, I use HB to make the basic plan first sketch. It is not too dark and not too hard. It erases easily. You can try to H2, but nothing harder. Keep in mind, while Hards give a lighter sketches, they are more dense when it comes to being embedded in paper, and more difficult to erase. Start by HB.

Then use a 2B to describe everything, and add shading. To use a heavier shade 3B or 4B, but nothing heavier. If you go heavier, you can have a lot of smearing and graphite will be too heavy to remove. Experiment, see what you're comfortable with first.

The scheme is the best software for drawing people. This is what I use. I sell my art on Ebay.