For this set of thank you notes, I looked through my supply of "inchies". Several years ago, I joined a few swaps through Splitcoaststampers to trade inchies - tiny 1 x 1" pieces of art that each of us made. They can be added to cards as embellishments or focal points.
Each of the cards I made had the same basic format. The inchie was the starting point for the color choice.
This card had the same basic sketch, but I strung some punched glitter hearts instead.
The last card started with an inchie I made: stamped and glitter-embossed beehive, pre-made bee embellishment, metallic cardstock bottom mat.
The two patterned papers are, as well as the yellow background, are from my hand-made paper supply.