Your blocks are lovely. I really like your colors -- the gray, black, yellow and white look great together. Personally, I don't like the solid blocks. I'd remove those and use sashing between the pieced blocks, probably yellow. Then maybe a narrow black border and one of the prints as a wide outer border--maybe that pretty yellow flowers on gray print (second row, second whole block from left). But it's your quilt and you will know what you like when you audition some sashing strips and borders, I think.
It's going to be beautiful when finished!