This is for a land scape billboard banner, its size is 40 by 27 inches  and 300 pixel/inche. i opened the photo shop, selected file then new and then inputted the my size for the width and height, and resolution and selected enter. 

Than i pressed control button and A to select my canvas, then clicked  Layer on menu box and added new layer, then i pressed the control button with D. more layers were add at some points.

I picked 2 rectangle and 1 eclipse shape from the shape tool an dragged it to my required size, coloured them to my choice and i used the pathe tool to adjust my eclipse

Imported my image and logo to photoshop and resized it and selected enter.

Then i used the text tool to write my wordings