Supplies:
-1 piece white matte cardstock (this is your background - 
  (so you can use any color you want)
-Various ink pads (I like to use metallic - 
  (especially Cat's Eyes since they are so easy to hold)
-Black ink pad (The blackest you can find - I use Stampin' Up!'s pad)
-Embossing powder 
  (you definitely want clear, and perhaps some other colors to dab on)

Now - this is the fun part.
Step 1 - Take your background paper and using the Direct to Paper technique,
color, scribble, mark, paint with all your colored ink pads.  You want this
to be a mess - with no rhyme or reason - be bold - use colors outside of
your comfort zone.  Use gel pens, markers, Pearl Ex, anything you want to.
When you are satisfied with your colorful mess, go to step 2. 



Step 2 - Chose your stamps and then stamp on your background with your
black ink pad.  Again, there needn't be any theme or pattern, in fact, I
think the less structured the better.  Once you are happy with the amount of
stamping, select your embossing powder and emboss the entire sheet.  There
will still be "wet" spots of ink and the powder will stick there.  I always use clear,
but I may put some gold or another color in a few spots.  It takes a while to
emboss the whole sheet - I give my embossing gun a rest between sheets if I am
doing more than one.  Once this is done, go to step 3. 

  
Step 3 - Take your entire sheet and decide the size of the squares you want
to use.  I typically use 1" x 1", but you can use bigger if you want.  I
certainly wouldn't go any smaller.  You can also cut your squares with
decorative scissors.  Once you are done with your sheet you'll have more squares than you need, so you can always stash them away to use later, or keep making cards until you run out.

One thing I am doing is saving a square from each sheet - I think it will be a
very cool project to use all the different squares.  I'll probably use them to cover a
journal.  OK - all cut out, proceed to step 4. 



Step 4 - grab your adhesive and a piece of paper to stick your squares on.
It is really fun to see what color card goes with your squares - Some of the combinations I would have never thought of.  You can arrange your squares prior to
gluing, but I usually just use the squares to see how many I need for the project I am
working on, and then just start to glue them down.  As you can see from the different cards I made from the squares I cut from this sheet, the background cardstock color can really make a difference in how the squares look.  The pattern you put them in can make them all look different, too.