Open your layers palette and make sure your top layer is highlighted. Add a new raster layer. Name this layer. Using your selection tool. You want to make a selection at the bottom middle of your image where the feet peddle would go.
Flood fill selection with woodgrain pattern.
Use the settings as below. Add a new layer. Using your tube tool. Place 3 JMpianofeet at the bottom of the feet area. Add a new raster layer.