If you took the X all the way out of the quilt and made a lighter weight one for that , wouldn't it look more even weight-wise?

try switching the first one in the second row with the last one in the bottom row does that help?

I agree with quilting candy - the blocks with the flowers in them are too close together. They are all beautiful so it will come together.

I'm guessing that the big X is one of the ones you don't like.

I think you've looked at it to long. I love all the blocks and I think once you sash it all it will look different and come together. It's really pretty. I want to do a sampler quilt soon after I finish a few things first. I really like the colors you used. And I really like the idea of the hears being in the cente of the quilt and others radiating out from there. Good luck. It's truly going to be a pretty quilt.

i agree with barny take away the heavy too dominant block [middle bottom on 2nd lay out] may be rework it with the floral

It's very pretty. Have you considered sashing it? I think that might give your eyes a bit of a rest from all those points.

I love your blocks, you did such a good job. Once you put the sashing in it will bring it together.
You are at the stage with the quilt when something always looks wrong. It happens all the time. By the time I am putting on borders and binding nothing is right with a quilt. Six months later it looks fine. Quilter's remorse .:)

I agree with those who say --add your sashing now--it is really hard (for me) to imagine what it is going to look like without actually seeing it put together. I, too, would put the heart block in the center. You might try making diagonal rows of blocks with similar values--when you look at it, it will provide some continuity for the eye and still spread out one's visual impression. Going to be a beautiful quilt. Keep working!