When I visited the site from Petra http://www.poohbeers.eigenstart.nl/ I discovered another site with a workshop.
How to make a garden chair by crochet. You must have a little patience but the result is wonderful.
The dutch page is http://keetjespoppenhuis.come2me.nl/
a chrochet hook 1,0 mm
thread for chrochet DMC number 20
It's not ready yet because I've used the wrong paint. Now I'm thinking how to solve this problem because I've put a lot of time into the crochet. :-(