How Do I Make a Custom Wedding Invite Stamp?

Getting married next year and while I would love to have professionally-made invites, we both don't feel comfortable with giving our name, venue location, and other details to strangers on the internet. Also, I am willing to create things that take time and effort if it saves us money in the long run.

I would love to create a red rubber stamp wedding invite in something slightly similar to the photo I've included below (credit goes to Englishstamp), but I want to choose my own font and floral border type, I'm a very DIY person!

https://preview.redd.it/2zyysyj8xdie1.png?width=529&format=png&auto=webp&s=c6b88a0276ba1759b19454f9d93c488f0da87548

How would I go about creating a stamp that has lots of text like this? What programs do you need to take your intended text design and create a stamp? What materials do I need?

New to this but really wanting to create my dream invitation and if any of you know how I can create my own long-text stamps, I'd really appreciate the sharing of tips and knowledge! Thanks!