I like the stylized waves. Could you try a design with the eagle's head a bit more blended into the wave? Also you can go to 3 colors to tie it closer to the original inspirational painting?
For #31 make the font for American large and line up Defensive Arts Academy under it. American could be in the dark blue and the rest in cyan. I don't like the blocked out Academy with stars. The fluidity of the waves and the rounds on the font should work.
Can you make the froth of the waves a bit more like the Great Wave picture I started with?