What happens next?

How to make a digital portrait
Position yourself in front of a mirror so that you can see your reflection and the computer without changing position or moving your head.
If this proves too difficult, you can instead work from a photograph of yourself and perch it close to your computer screen. Use a good painting program such as photoshop.
It is best to use a graphics tablet, but this can be done with a mouse as well. Block in the main shapes using 3 or 4 colors.