I’m trying to get a full back tattoo but I’m having issues…

I’m trying to get a full back tattoo but I’m having issues locking down what to get and I need your help. I want a full back tattoo but I need help design it. I’m going to attach a picture of the format that I’m thinking but I need your help in choosing the pieces to go on there. I want the tattoo to include a focus on my culture which is the Aztec/mayan and Spanish. I was thinking of including a couple pyramids from the Mayans (because of my roots) and some of the Egyptian pyramids (because we all come from Africa). At the same time I’m a big fan of the study of stars and want to include some star formation aligned at the top of my back with the pyramids which would be closer to the bottom of my back. Can you help me design in even if its a rough draft black and white sketch?