Those applied to the original data set in columns K:AQ -- here is the image of the Expander and XYadj settings for that portion:
How to Improve Your Iris Model Picture 4
Together, the following image was assembled, using the actual iris photo as chart background:
How to Improve Your Iris Model Picture 5
Per that image and the data table, Row 2 G2:IL2 values were changed of "Model Your Own Iris In XL.3.xlsx" per pasted in values, as copied from the BB:CG cell range of Big Baby Blue;
A white triangle and white 5 pt weight line were added from Media Tools to the upper right of the Plot Area to block that portion of the "flesh" showing, and were very carefully placed.
How to Improve Your Iris Model Picture 6
Here is the Final Best Image produced from that process: