Greetings from wherever I am when this post gets posted (I bet I'll be in Marseille flying back to London) and Happy Valentine's Day!!
Hope everyone has a lovely day being in love (or breaking up ¬,¬"") or just being single and not bothering with the whole shibang... Anyway, here's a 3D origami heart which I made 2 weeks before today (thought someone would buy it off from me, but no, no one wants it, so it's sitting in a cabinet). It's so easy to make but be prepared to fold a lot of pieces beforehand. ^_^
Here's the video I used to make the heart above. It's in Mandarin Chinese but it's easy to follow even if you don't understand the language...