So, now you know how to make your own chain mail links and assemblies. And now, you want to make a shirt. A chain mail shirt can also be called a hauberk.
I will post a link here to the pattern that I used to make my shirt. David Heirtzler wrote the article and the pattern and I can not improve on it.
The biggest thing with making something like this is to pay attention to the direction that links hang. Chain mail will move in one direction (expand/contract) but not move in another direction. To make a clothing item, you need the expansion to be in the correct place.
I followed the above pattern almost to the letter. Once you learn a little more about the chain mail, you can edit the pattern to fit your body or project.
Go ahead, make a shirt, have some fun.