Floating Squares or Shadowbox Pattern or 3-D Squares, 3 different designs! For Beginners

We sew very beautiful patchwork blocks with a 3D effect Design 1: We cut out: squares from the main fabric 6 inches, 4-1/2" and 6" wide dark fabric strips, 2" wide background fabric strips, 2" wide connecting background strips. Design 2: We cut out: squares from the main fabric 6 inches, 6" and 7-1/2" long dark fabric strips and 2" wide 2" background fabric squares, 2" wide connecting background strips. Design 3: We cut out: squares from the main fabric 6 inches, 1" strips of background fabric 5" and 6-1/2" wide main fabric strips, 2" wide background fabric strips, 2" wide connecting background strips.