Window illustration is a great way to create interest and grab peoples’ attention for seasonal window displays. It is temporary and easily removable (but equally can last a few months or more if required).
When commissioned I do a site visit to discuss ideas and to take pictures of the window, I then produce a sketch and once that is signed off draw the final design on my iPad. For complex designs I work from print outs that I fix to the outside of the window and trace inside to make sure the final design matches the drawing.
Pricing depends on how big the window is and how complex the desired illustration.