Hey there,
Here is another sketch. The first part is to capture the playful nature of penguins; the march is to portray a line of penguins marching along (it is still playful and simple, but in a more rigid, marching style). I honestly didn't go for a lot of part writing rules and stuff in this piece, but if you think that there are spots that could use some of that stuff, then please feel free to point them out. As always, any suggestions and comments are appreciated.
Thanks!