Here's a photo of the beret from yesterday. I took it with my phone. I think it looks really cool. Sophia asked if I would get it finished today. I will try.
I am using the yarn that the pattern is written for but you could use any #4 yarn. This yarn called Bamboo Ewe is a blend of bamboo and wool. It knits very nicely. The only thing I don't like is you cannot throw it in the washer.