I got the idea for this from Kirstie's homemade Britian (UK craft show), where she makes a bird using the same method. I thought hearts would make cute valentines gifts. Btw I've just realised that I've called this paper-mache in the title and it isn't really- oops!
Here's pretty much wnat you need to start- newspaper, sellotape, string and scissors.
Cut a piece of string (or ribbon if you want) and knot to make a loop.
Scrunch a ball of paper around the knot in the sting, so that the loop sticks out. Tape the knot to the inside of the paper, so that its secure.
Cover the paper with sellotape so that it makes a smooth and shiney surface.
Keep adding scrunched up balls of paper and covering with tape until your heart is the shape you want it.
Now we paint the sucker with the white acrylic paint. You may need to do a couple coats. Make sure no sellotape is showing and try not to paint your string.
Now we have a blank canvas to decorate. If you're arty and like painting you could decorate with different paint effects. I, however am not arty so i covered mine with little scraps of decoupage paper. The paper I used is from decopatch an comes in lots of pretty patterns. It also comes with a glue/varnish that dries to give a nice finish, although i think you may be able to achieve a similar finish with modpodge.
Cover the whole heart. Let dry. Sit back and enjoy (or give away for someone else to enjoy).