At first, I wanted to use Ellen's geometric pattern Ellen Vargo stamp set 01, 03 and 09 (EEV01, EEV03 and EEV09) as they are without cutting or adding anything, so I made a square of drawing paper and put the stamped patterns on it and tried to see if they fit well. And happily they fitted well!!
Since the size of each square in the background was determined, the colour scheme was reduced to a few shapes of blue and the opposite colour of the focal point yellow and painted using masking tape. I used PaperArtsy Fresco Finish Chalk Acrylic paints Southern Skies (FF95), Summer Sky (FF150), Peppermint (FF189), Pea Coat (FF27), Pool (FF186), Snowflake (FF15) and Lemon Meringue (FF142).