Birthday Shirt Graphic Design

Hello! I am looking to get a graphic designed that can be put on a t-shirt. I am looking for something that combines shark(s) and dinosaur(s). It is for a 3rd birthday so more cartoon style than realistic. The design will be put on a light grey or blue shirt (see images of the shirt colors). Ideally the design will either have birthday themed items (i.e. birthday hat, balloons, etc.), text signifying a birthday, or a "3" as it is for their third birthday. I will need a PNG file,