For fun, on a warm summer night, sleep in your tarp. This too can teach you if you need to adjust your structure design. I have a son who is always cold. Tarp sleeping would mean he needs insulation under him. Another person may be the one who is always hot and throwing off the covers. You would want a more airy configuration. Always keep in mind getting in and out in a hurry and your ability to see.
A lean to in the field, made up of material found in the field, is a shelter that blends and disappears into the field. You can augment the lean to with a tarp if you expect rain, snow or other foul weather, but the first best character of a lean to is it's ability to blend.
Don't let the idea that this is a structure or building stop you from trying to learn this skill. It is still a simple grade school skill set after you cut down or gather up the poles. Lashing the poles together is merely wrapping around one and across to the other then repeating the wrapping and knotting at the end.
Once you have added the intermediate poles, you can lash on branches or stretch a tarp to shelter you from the weather.
|you can make this shelter|
With three coats of exterior latex paint to seal the canvas and make it tanned skin color, my grandson and I painted native designs on it and we used it as his personal shelter at two Powwows, and three summers play in his back yard. I believe it is still in his mom's garage. You too can make this shelter for a favored child or grandchild. You can use canvas boat covering or even sheets if you are staying indoors.
If you don't need a little tepee in your life, remember the lashing and lean to skills. You can build on them and see in the following photos how these basic skills have sheltered humans for eons.