This just goes to show how different we can be on printing the same thing.
For me, I always prefer a method that shows color transitions/ blends with as little if the dots showing as possible. As such, my approach is similar to the last post above. This is not the "correct method" but just another. There are no real "correct methods" other than the one the customer approved and pats for.
I would print the blue under, and also knock it out of the yellow a little. Maybe by 25% to allow the blue to mix more. Doing this, would then also require me to need up the blue just a tad. Maybe by 10-15%. Since the yellow mixing will take away from the strength of the blue since it's underneath the yellow.
These would print wet on wet. This creates a very soft blend with little to no dots visible.