One of my favorite types of tarp shelter the 3 sided wedge.
The advantage, of the wedge type shelter is that you are covered on all sides but one from the elements. This shelter was made by lashing two poles together, attaching the tarp to those poles then once you have pegged out the corners (around the raised bed in this case)
pull the whole construction tight using a support line to a tree or to the ground. Once this is done you may need to adjust the pegs to tighten the tarp. You can use your back pack, jacket or another tarp as a door for added comfort at night. I will demonstrate more Variants of the wedge shelter in the future.