It's hard to tell from this picture, but the illustrator used fabric and trims in her pictures. The grandmother's purse is a piece of lace, the top of the building on the lower right is ribbon, etc. Scraps of fabrics...be still my heart! I know where to get a few (bazillion) fabric scraps.
It took 3 fabric loving sessions, but the kids made pictures of themselves and their grandmas (Abuela in Spanish) or grandpas doing something special.
I present the masterpieces: