I agree with Rosie - something's not working. The colours and the prints are lovely and the colours blend but you seem to have lost the design format of the vertical/horizontal patches because it's all running together and making it look hotch-potch. I think it really needs sashing - then you would get the impact of the design. If it were mine - it's not - and bear in mind that I'm old(!) I'd want to use a taupe that blends well with one of the lighter browns, with pink corner stones. You may prefer to use either the pink or brown - or for a really big bang - turquoise. I think that if you were to lay your blocks out on something plain - just leaving spaces to represent the sashing - you'd see what I mean.
Good luck with it, your friend will love it whatever you do.