bookbinding: 2-section sewing, Z binding

I made two small 2-section books one for my niece (orange & pink) and one for my nephew (blue & white).

32 pages of drawing paper, varnished paste paper covers, dimensions 4.5" x 4" x ½" (11.3cm x 10.2cm x 1.2cm)

Z sewing using 1- 2- & 3-Section Sewings Non-Adhesive Binding Volume II by Keith A. Smith