It could be a minimalist style cartoon, focusing just on the elegance and movement of the black and white flying birds. Or perhaps it's a story-driven cartoon where the birds play a key role in a plot.
First, start with the basic shape of Crash Bandicoot's head. Then, add details like his eyes, nose, and mouth. Sketch out his body and limbs roughly before filling in the final details.
I'd suggest looking on specialized graphic design platforms such as Canva or Freepik. These sites usually have a good collection of cartoon clipart, including overalls ones. Sometimes you might need to pay a small fee for high-quality or commercial use.