Choose a ground that is dry, has no water, and pretty flat
Also choose a ground that is a good distance to water and has some wood for fires
Use fallen trees and branches to create a shelter
It is good if your shelter is roomy if you have someone else with you but if you are alone it is good that you have a smaller shelter to keep all the heat in, also good if you have room for a fire
If you found a shelter in a hole then you might want to clear some of the branches so they don't poke you in the eye but if you are building your shelter out of branches then don't clear the branches