3-D Birthday card

I always struggle to make cards that could be given to boys or men. I figured using primary colors would keep it from looking too girly and I could use it for a boy or girl. The card pops out when you push in the sides, but still fits in a regular A2 envelope when it is flat. Love that. I also put some sparkle on the candles above the Happy B-day, not sure if it shows in the photo.