Hi Nong, we like your idea and progression very much, we like the idea of mixing P and B to create an abstract and minimalist little fish. Here Im writting you some ideas suggestions and tips:
-We dont like the font type, could you try with others fonts please?
-Could you also try to distinguish "pal" from "bin" a little bit, maybe putting one of both in bold and the other in regular font? or maybe changing a little bit the tone
-Could you try to down the tone or bluish the fish eye a little bit (not that black) to make it more "fish", now the eye is maybe too dark
-Could you try with other colors (red or orange) over white and black background
And finally, could you try to do something like this with the fish?
http://cdn.designfestival.com/files/2012/05/01-transparency.jpgI mean, the "b" in one color, the "p" in another color, and mixing both with transparency to create the fish. Its just an Idea we like, maybe with blue & red or red & green, or something...
Thanks for your work,
Alex