I also use tracing paper. I buy it at Walmart in the section where they have art supplies. It's inexpensive and works really well. Do you know of a place in Luxembourg City where you could buy some? It really is great for paper-piecing. I would think if you trace on a phone page with a black marker the lines would be visible enough so you wouldn't get confused. I'm just wondering how easy it is to transfer the pattern onto it. It might be hard to see the pattern through the print. The only way I'd bother with it is if I can't find tracing paper.