Help with building a wooden post

me and my friends have been building a place on this field in the forest, and i figured out how to get a light up there without having to use a phone, i was thinking of making a wooden post about 2m tall, with some like 30 to 20cm planks on each side to stablize the post, and add some planks diagonally and nail them into the bottom planks and the main post so it dosent just tip over.I dont think nothing can really go wrong with this but i might as well ask and i dont have any experience