Alright, I see. What kind of illustration you'd like in terms of visual style and drawing ? If you got an example you appreciate from my gallery, that would give me an idea of what you wish, that'd help me
To be honest, I'm really interested in doing that for you, I've just got to figure out the details.
The more info you can give me, including the quality/pricing you're looking for, the best it is.
Usually, a simple sketch is around 20€, a drawing with shading (grey nuances) is more like 40, and with colors 60, depending on the format. I'm really new to this, so I'm taking advice from friends who are used to draw commissions.