Find a pine tree, a nice sticky one full of resin, that stuff will burn in rain. Look for dead branches, go for one near the base of the tree and cut it off as close to the trunk as possible. You’ll know when you find a good one.
Split the end of the branch with an axe four ways, north south east west, quarter it. Cut down several inches. Break nothing off.
Carve out some kindling from the inner edges of your cuts. Shave it out, make an X of airflow. Fill the X with the shaved bits. Now fill the X with fire. Try not to burn the place down.