Challenging myself - one sketch three ways

I'm got a day off tomorrow, a freshly organised stash and a draw overflowing with paper, so I'm going to set myself the challenge of coming up with three completely different cards from one sketch. I've never tried making a card from a sketch before, so it's a totally new thing for me!

The sketch I've chosen is this one from Ellen Hutson papercraft essentials & more. Tomorrow I'm going to sit down and try to make three cards, one of which will be a birthday card, because I need one for my sister-in-law, and one may be a Valentine's card for my hubby. I'll post pictures later in the week!