How can I announce my pregnancy?

Hey y’all, so my partner and I are planning a baby. I want to give him a cute announcement for when i find out im pregnant. We got three boys I would love to have in the announcement. 2 almost 3 next month and than an almost 2 year old. I’ve never gotten to do a cute announcement and he never had one. This is our first baby together, I’d love to make it special. So any ideas or pictures please help. I wanna plan this out before it becomes real real. I like to be prepared.