Answer:
The phenotype is the observable characteristics like hair color or skin color.
Step-by-step explanation:
You would create a regular Punnett Square and just plug in the phenotypes in the square. It would be in the same way you would plug in the genetic types in a Punnett square. The square is just a tool for probability. I learned this last year in 9th grade so my memory is kind of hazy.
If you have any questions feel free to ask in the comments. - Mark.