Page 19 is a fold over page, with the flap along the top. I gave it a pretty edge using a heart shaped border punch, before decorating it with patterned paper and ribbon.
Page 20 is decorated very simply with a piece of patterned paper and part of a die cut.
Pages 19 & 20
Don't forget that 1/8" between the edge of the page and the binding!
Pages 21 and 22