The styles can vary from extremely messy doodled to very intricate pictures depending. If one is preferred, please ask when commissioning. I will always try and make them neater for the commissioner and will ask for as much detail they can give.
Prices may increase a little depending on the complexity of the design or if you ask for a detailed background, but usually not by much.

References would be appreciated, but if that cannot be given, detailed descriptions would work too, however, if I draw whatever you describe wrong, you'll have only one chance to tell me and to fix it.