Thank you everyone for all the encouraging words. I hadn't noticed the price tag Ms. Fallert had on her quilt. Boy! My grandson is getting a very expensive gift!
The one saving grace in this madness is after I've sliced and diced the two sets of triangles and I've mixed the strips together I only have to match the middle seams. The other seams just fall where they will. The second plus is the strips, after they're cut, are on the bias so they fit together very easily. Thank goodness. All I have to do is remember what goes where! And I've already sewn one set together dark to light when it should have been light to dark! Oh, well. It's not the first error and probably won't be the last! And it's not fatal!!!
Thank you again! I appreciate your positive feed back more than you know!