Shaving Cream Marbling on Fabric

I have heard about this for ages and wanted to try it out. And since I am showing the technique at my next FibreArts Toronto meeting which I am hosting, I figured I should try it out in advance. Devora came over on Friday night (I think it was Friday because with all of the chagim [holidays], I've kind of lost track of time.
Menachem had purchased the shaving cream, I had leftover Procion "H" dyes from the silk painting class I took about 5 years ago, and cotton fabric. So I improvised the rest -- I made the rakes from hairpins clipped onto stiff plastic and tried dripping the dyes, first by shaking from a stick and then by sucking the dye into a straw (taking care not to let the dye reach my mouth).
The results were interesting and proof that I need to get eye droppers because if the colour "blobs" aren't big enough, the resulting marbling is very faint and subdued. Also, the bobby pins didn't make a precise "cut" through the shaving cream so the results weren't crisp enough. I will ask Menachem to make me some rakes. I look forward to the real meeting. It should be fun. And the book about marbling I bought only because it was on sale and really cheap is fantastic. I might even read it in advance of the meeting... No posts of the samples we made because I don't want to discourage anyone.