These steps are part of the instructions as well. PLEASE READ TO AVOID CONFUSION:
-The handle should attach in the right place. For some reason the connection didn't work in LDD.
-Parts in blue can be any color you choose because they can't be seen in the finished model.
-You'll find one pink part inside the model and one outside the model. Instead of the pink part inside, replace it with the pink part outside. This is, technically, an illegal connection, even though it doesn't seem like it would be. The pink part can be any color.
-I highly recommend gluing the model if you plan on holding it, especially on the grip.