Simply order the print size you would prefer (A4 or A3) then leave the following details in the notes at checkout.
Name of team
It is your responsibility to leave the details for your design in the notes as requested. If you would prefer a particular image is used please email firstname.lastname@example.org with a photograph. If I do not receive additional information within 48 hours of ordering I will assume you are happy for me to source images. Your design will be delayed and will not be produced until this information is received. Please do not send it over social media.
Due to time constraints, I will be unable to chase up any information, make amendments or provide you with proofs of the design before it is posted out to you. Please ensure that you provide as much information as possible as the design will produced to your exact specifications.
If you have any queries please get in touch.