what kind of sign are you interested in?
There are so many options to make a sign! It would be great to know a little bit more about what kind of sign you are looking for! I love to use the old school method of making my own signs by designing them on the computer in Microsoft Word or Photoshop and then mirror printing them in tiles! I then rub them with a pencil to get the design sketched onto my board that I am making my sign out of, then I use paint markers to color the design onto the sign! Everyone thinks my signs are store bought...I laugh! Lol! They are so easy to make and you can create whatever you want! Hope this helps!
THis might help get you started: https://thehoneycombhome.com/diy-wooden-sign-for-the-porch/