Start by creating a rectangle using rectangular shape tool.



Press Ctrl+T. Right Click and select distort. Adjust the nodes as shown.





Enable "add to shape area" at the top bar. Create a flower 4 shape using custom shape tool and place it as shown.





Double click the layer to open layer style window. Apply settings as shown.









Using polygon lasso tool create a selection as shown below.



Create a new layer. Apply black to white gradient in linear mode.