Raining crayons

I tried this completely new technic for me, the idea was to glue some colourful crayons on top of the canvas and then melt the crayons with your hairdryer. Well my crayons were maybe too fancy when they didn't melt almost at all, so this turned out to be a huge mess. I think I'll try this again later, but first i need to buy some cheap crayons and more colourful ones...