I draw tattoos on top of photos or tracings of the tattoo area to ensure good fit and flow.
If possible, provide some useful reference photos to expedite this process.
Ensure the camera angle is straight ahead, and the tattoo placement area is flat to the lens.
Evenly distributed lighting without any harsh shadows is beneficial.
Make sure to include multiple angles if the tattoo area cannot be photographed all at once.
This can also be done at an in person consult.