I am so glad I bought PTI's Bird Watching stamp set before it got sent to the vault as I've used it today and I love it. It's the final challenge day today (I think) at Papertrey Ink, but I've only just got a chance to sit down and have a go so I think my chances of more than 1 entry are slim which is a shame as I enjoyed making my own envelope. I even used matching lining paper and it looks so sweet.
I used Watermelon Divine Twine, which is a really cute combination of pink, green and white thread and matched the colours in my card perfectly. I managed to put an ink splodge on the corner of the envelope so used the birdie sticker to cover it up (having put far to much time into it at that point to scrap it and start again)