Intarsia, Not For the Faint of Heart

I have done Intarsia before but it always turned out puckered.  I just took a class and learned not to carry the floats and it is so much better.  However, there a zillion ends to weave in on the back side but... 

I wanted a new pillow for my newly painted bedroom, of course it is periwinkle, and found this pattern.  I wanted something more than a plain back.  Most of the people in class were working on coasters so I put the coaster pattern to use and made a back out of the concept.  I like the look so much I think an afghan out of the pattern is in order.