Second Paint Slot Not Showing Details in Texture Mode Hoping someone can help!

I'm quite new to blender, so I apologize if my terminology isn't quite accurate.

I'm working on a character model.
I'm using blender render.
I've just finished unwrapping everything, and have laid down a base color layer in my paint slots. This all worked fine.

I've added a second Paint slot and turned the alpha down to zero, essentially using this one as the "detail" painting. But nothing I do on this second layer can be seen in my viewport.

I'm in texture mode. I have a Hemi light in my scene. I'm following Darrin Lile's tutorial:
https://www.youtube.com/watch?v=yHTakjMTVWQ

I don't understand what I'm doing wrong. Any suggestions?

See Screenshot below
Changing around the order of the paint slots in the texture tab is what solved my problem. I had them backwards. I put my base layer at the top, and my detail layer 2nd and it's working fine now!