I purchased some venetian plaster. I was told it was very easy to apply. I started with a board to practice on. It looked terrible. I tried again. It looked some better. But not a good job. I did try it the 3rd time and I applied it very thin. This seems to look better. I am just totally unexperienced in this technigue. Please tell me exactly How I need to apply and include the stokes, thickness and all info you hve to I don't mess up my bathroom. Thank you.