This is what I came up with:
The base card is Island Indigo layered with first Whisper White and then Gingham Garden designer paper.
To make the window I measured out the space for it than cut out the rectangle using my cutter. Since it was difficult to cut through all three layers at the same time, I cut out one layer at a time - using each layer as a template for the next. I attached the window sheet, which I cut larger than the window it would be covering, between the designer paper and the whisper white layer. To finish the window off, I attached a silver sticker decorative line around the edges.
The tulip was coloured using SU markers and an aqua painter. It was die cut using the Backyard Basics framelits and attached to a piece of Island Indigo card stock and adhered to the inside of the card so it would show through the window. The same edging was used around the edges of this piece of Island Indigo as I did the window.
The flags were made with hand cut triangles of melon mambo card stock.
Stamps: Backyard Basics, Bring On the Cake
Inks: Black Stazon, Melon Mambo, SU markers (Melon Mambo, Pear Pizzazz)
Papers: Island Indigo, Whisper White, Melon Mambo, Gingham Garden Designer Series Paper
Accessories: Window sheet, Backyard Basics framelit, silver decorative line stickers (non SU)