My opinions/observations:
For starters, I think a 3 x 4 arrangement of non-matching blocks is challenging - for me, anyway.
The yellow block catches my eye - it seems a lot "brighter" than the rest of the fabrics.
The blocks that you used three fabrics instead of only two fabrics are more "interesting" to me than the blocks that you used only two fabrics.
The colors of the yellow, light olive green, and the light tan block (lower right corner) seem "light-weight" compared to the "denser/heavier" feeling of the other nine blocks.
I prefer a larger sized "couch quilt" for snuggling under - but if it's only to cover a lap - or to be a decorative piece - or for a little one - it's an adequate size.
But other posters are correct - after it's finished - a quilt usually seems to be "perfect" - and if it's being used - it's definitely "very perfect".