After putting this on one finger, I just rubbed my two index fingers together and applied the product evenly on each eyelid (up to the brow) and down around the ducts and lower lash line. A little goes a LONG way, trust me!!
In order to get qualitative results I did two different eyes (one eye with MSC pigments and the other with the SoBe samples that I was sent with my order). Both had the same base (NYX eyeshadow base in White) applied over the primer and under the pigments. I photographed both eyes at three various times in the evening. I have to say, I am quite pleased with the results.
Using my two unnamed SoBe pigments:
(Edit (7:13pm): Lex let me know that the two pigments are "One of a Kind." She creates pigments (that aren't on the website) to send out in packages. Sometimes these are sneak peeks into new colours that will be posted on the site, and sometimes they're just a colour she mixed together. Neat!)
I created this look:

I applied the light/soft pink to my lid (from the ducts all the way to the outside corner of my eyelid) with a flat eyeshadow brush. Then I applied the mauve colour in the crease/orbital bone with a fluffy blender brush. You can see that even after 7 hours--the product still looks pretty good! Yay for that!!
For the MSC eye, I did this:

I am BEYOND thrilled to have a found a product that works for me!!! For any vegans out there (or for anyone who prefers to keep animal products out of their cosmetics) curious about what to use, SoBe's Primed and Proper has my stamp of approval!!
Edit (05/21/2011): As I have said in the comments on this blog--I have NEVER been able to successfully recreate the results that I achieved during this test. -sigh- I don't know what it is. For a consistent product, Primed and Proper has not delivered (for me). If you know of any trips/tricks, I would LOVE to hear them. Today I played around with using it as a lip primer under some OCC Lip Tars--I'm not too sure how well it's worked, but the Lip Tar has stuck around pretty well so far!