How to make a frame to install a window in a shed

I use the finger joint jig to make the frame I need to install a wooden window in one shed. This diy wooden frame is a simple frame that I need to install a very simple ventilation wooden window. This is a woodworking project that we can make quite easily if we have a finger joint jig for router table and we follow some woodworking techniques. How to make and use the finger joint jig: Homemade quick action bar clamp: Finger joint box: