Invitation Design for Birthday invitation

About Birthday invitation :
I need a birthday invitation for a joint party for my son (turning 5) and my daughter (turning 1). Their birthdays are very close together so we are doing one party, but I still want them to feel special. The theme will be dirt bikes for my son and daisies for my daughter. I have a Pinterest board for inspiration of what I am looking for.

Project Description:
As stated I have a Pinterest board that shows the style that I like for each theme separately, but need a creative mind to mesh the two together perfectly into one invitation.