5/10.
The left star actually touches the edge, and the mix of rectangles and squares is a little weird and the colour scheme is a little weird for me, and it looks a little like you had two ideas for a design and decided to combine them. I think you could make an improvement by using a commonwealth style flag, where the kangaroo in the yellow box replaces the union jack, and then picking one of the two star designs to sit in the center right, like the New Zealand flag's stars I think you drew influence from and then pick either the black or the blue as a background. I'm super sorry for being possibly overly-critical here!