Developing the Quilt Design for "Meditation"

I´ve been thinking about the quilting design for the "Meditation" quilt for a few days now. First I wanted to do a leave-allover design, but Irises don´t have leaves that would work for such a design. So I started searching for images of irises on Google and found some very good and helpful ones. I did some sketches and the blossoms are easy to do, but the leaves. I didn´t get them. And I wasn´t able to see what was wrong. So I went into our garden and set down in front of some Irises. Unfortunately they don´t bloom yet, but the leaves are there already and finally I think I understood the shape. So here are the sketches which will lead to the quilting design.
First sketch with strange looking leaves on the left:
This one is better, but still it feels wrong:
This is made in the garden with live Irises and I think the sketch is much better:
And this is the first sketch for the overall quilt design for the top:
I never quilted a quilt this size with a free motion design like this. I would like to do it free motion without marking it. Am I crazy? Cause the quilt is fused it is impossible to undo the quilting. Scary...... But what´s life without a challenge now and then ;-)