A birthday request!

[jennifur25]

My twins will be celebrating their 3rd birthday in a couple weeks (how the heck did THAT happen?) and I was going to try to make them tshirts for their party, but I'm having problems with my software. I was wondering if someone would be able to help. They are having a firefighter themed birthday party so I thought maybe a shirt with a firetruck on it and something like Sound the alarm! I'm three! or It's my birthday! or something.

These are their invitations- so maybe something that kind of matches this? Thank you in advance!