Need form to have a client fill out, and painting of cousin Siri

Ok so I have client that is having a hard time trying to explain what he wants visually in three commission Illustration pieces wants me to do, is there a form or questions to have my client fill in the blanks? He actually wants me to met in person, but I think it is just better to write down his thoughts. 

I attached a painting #gift of my cousin Charlotte Brännsroms new baby Siri. My mother wanted me to do it for her. I did not have much time, but it has a cute factor she wanted. I hope everyone had a great Christmas and I look forward to what next year brings.