My Dad secretly/jokingly wished for a poster of all his aquarelle paintings, he desplayed at his exhibition two months ago. As quite a few of the paintings have been sold, or changed hands, and because he gifted his grand children to pick out their favorite one.
So I made a collage (tricky), and have it printed on a poster (60x90cm) photopaper poster. It arrived last week and yesterday I surprise my Dad. So today we have one happy Dad and I'm free to post this collage.
What a terrific gift for your father. And for you and your family, should you want to print it again for anyone for the memories. He is an excellent artist. I guess you inherited some of his artistic genes.