Publication Project - Illustration Win?

I showed my "Don't Forget..." pages to my tutor and she agreed that they are not really working and jump out a bit too much. So I decided to stretch the "stargazer silhouette" theme that I am using on one of my spreads. I think they are much better and more in keeping with the look and feel of my book.

I want the effect to be subtle but I don't want people to miss the joke altogether, so I had to play around with the CMYK values and print a few test pages. Turns out a good setting is C0, M0, Y0, K100 for the back ground and C40, M40, Y40, K100 for the silhouetted figures.

Thanks to mag design legend Terry Stokes for the top tip!