Hi David . Firstly can you post a picture of your lap. Secondly just keep doing 1/3 strokes, slowly and evenly, and thirdly here is a picture of the mess I had with my first mirror. It's the same mirror that I am using at the moment so don't get discouraged and keep going. Also a picture of the moon I took with the same mirror once I finished it.
Regards Cristian
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