This is a small project I did to test the new Tints-All colorants and included more than one technique for demonstration
 purposes.  The entire project took about 4 1/2 hours and only cost about $16 retail!   What a great gift or project to sell.

  Note: I chose to spread the mastic a little thicker to demonstrate the 'puffy grout' look.  As you push in your pieces the
  mastic puffs up around each piece.  The damp paintbrush is to smooth out any rough spots.  If its too puffy for your taste
  use less mastic.

Materials

                                                              paper bowl
                                                                                   plastic spoon & knife
                                                                                   small paintbrush & cup of water
                                                                                   plastic squeeze bottle (optional)
                                                                                   sm craft frame  ($2 at Michael's)
                                                                                   glass mosaic cutter
                                                                                   tweezer
repositioning tool
                                                                                  toothpicks
                                                                                   Tints-All, Sea Blue Green
                                                                        
          tile mastic or white sanded thin-set

   glass cutter
   glass mosaic cutter
   glass 'pliers' (snaps the stained
             glass where it is scored)
   stained glass
   millefiori & filigrana slices
   glass rods
   glass stringers
   colored 'gold' smalti
   glass beads   

1. Cut stained glass into strips then cut
 into smaller pieces with glass mosaic
cutter.  Most stained glass stores will
be happy to show you how, if necessary.

2.  Mix  Tile Mastic with tint in paper bowl,
keeping track of measurements in case you
 need to make more.  Start with less, adding
more as  you need it.  Use white colorant if
its too dark. Keep 'recipe' for future reference.

3. I decided to use 3 colors and
taped off the area for the first part.  Spread mastic evenly with a plastic knife.

4. I place some seashells first using
my brush to push up the mastic on
the side.

5. Remove tape and begin 2nd section.  I
added more of the same colorant to what
was left in the bowl, making it darker.

6.  2nd application.  Note: I cut the
rods and stringers (thin rods) so
they would stick up above the other elements, standing on end.

7.  I used plain white mastic for the center  section and glued 'reticello' rods inside the frame with silicone glue.   3/4" glass tile frames the outside of the frame. 8.  I mixed more of the lighter color and used
 a spoon to put it inside a small squeeze bottle. 
I squeezed out a bead of mastic around the
outer edge to finish it off.
                  9.      Done!

Below is another option (actually my preferred method) using white thin-set instead of mastic.  This technique is
perfect for direct method and if you are following a design. Instead of spreading it on I put the mix into a squeeze
 bottle (hair color or clear BBQ sauce bottle).  I sift the thin-set first to remove any hard pieces, add my water
 then the tint.   You can squeeze out one row at a time and still see your drawing.  Note: design is from Dover Books
 "A Treasury of Design for Artists and Craftsmen".


Bend the paper bowl and
spoon into bottle.

 


Squeeze out a few rows
 at a time