Long sleeve shirts rather difficult and inefficient. I recommend making a short sleeve shirt and extending the sleeves. I recommend doing this because, even though just cutting you shirt to be long sleeved is easier, in the process of creating the shirt tends to shrink. Another tactic is using more fabric.
There are many diverse jacket styles. I prefer longer jackets made for winter such as the chic Sherpa coat. But others may prefer shorter and not as heavy jackets such
Make sure to trace a centimeter away from the shirt on the fabric and make sure to inside out your un-sewn shirt before you sew so if you guys are
the image above is also super easy to make just make sure that the inside outside of your fabric is showing and then do a dolphin stitch along your your