vcquan

First time posting a pic so be gentle if it doesnt work ..
I am terrible when it comes to picking coordinating fabrics!
I would appreciate comments /suggestions on the overall composition of this WIP .. too dark? too bright? not bright enough? more yellow? less dark?
And my original question... should I add sash between the blocks? I plan to add at least 2 borders; maybe 1.5 or 2 inch dark and then 5in white(not sure yet).
thanks for looking and recommendations.
p.s. the pics are different changed out 2 of the solid white stars