I totally cheated on these; they are duplicate stitched on after I knitted the body of the mitten. The designer worked them in "intarsia in the round" but I did not feel up to learning regular intarsia, let alone in the round (which is not really in the round, since you end up going back and forth if I understand correctly).

Anyway, thanks! You have increased my confidence that they will be well-received. :)