Working with sleeves may at first seem a little intimidating but they're really not.  Get past your intimidation by watching this video and seeing how easy it really is.  Professor pincushion goes through from the process from just a simple pattern form and takes you through underarm seams, hems, and attaching it to your garment.  The most important step is gathering the cap of the sleeve evenly so that it will nicely fit in the armhole.  Using these techniques, you'll be able to attach any type of sleeve to your shirts.