I've made some practice blocks of this pattern. You need to use partial seams, but it's not too bad. Cut the pieces, then (referring to Barb's pic) Partially sew the red triangle to the center square: Start at the corner of the square and sew about half of one side of the square. Next add the Dk green triangle, no partial seam for this one, sew it to the center square and the red triangle. Same with the lt green and brown patches. Then finish the red seam.