Family drawn portait

I want a portait drawn of my grandparents and their 11 children. I would like one large drawing and the ability to make 11 smaller copies of the same drawing if possible or the ability to do so. I can obtain pictures of each person in order to accomplish what I’m really wanting, and am willing to pay for the extra copies. This is a big project and I want it to be a surprise for my aunts and uncles. My grandparents and 2 of the 11 are no longer with us, so this will be extra special for those remaining to have everyone in an updated family picture since it’s been forever since they were all together. Thank you in advance.