Open your head in Anim8or and add a collar to the neck, if you haven't already done this. Save this model as a new file, because you need to delete the head later.

Model your shirt the same way you modeled your head. This means you can model only one half first, mirror it when it is done, join the solids and merge the points. The UV-faces can be bigger now, half or full credit card size as an average should do it.

When modeling, be sure that there are 3 points that come out specifically: Your chest; the middle should be a bit behind the rest; and your belly. Some people tend to do everything too flat, but have the heart to move the points a bit further than where you think they actually belong. As you see on the picture, my original shirt looks really flat, but I modeled it as if I went to the fitness studio every day. In the end, it looks more realistic than the normal one.



When you have merged the 2 sides, create a few differences between both sides, or it looks too perfect. You can adapt the new side to the picture in the background, then it should differ enough from the other side. If they are still too similar, you can make one sleeve more narrow than the other one or you can lean the end of the shirt a bit.

As you see, I added a fold in the back of the shirt, which I recommend you to do, even though you don't have one on the photo, but it has got a strong effect.



You can either let the sleeves open or you can close them, but if you do, please consider to let a circle for the arm free.



Note: It is really helpful when you add the beginning of the arms and the trousers. Save the half-done torso as a new object and delete the arms and trousers from the shirt. Give the parts different colors, so you can easily differ between them.



I hope you kept the size-rectangle, if not, copy it back from the head-model.

Delete carefully every point of the head and texture the shirt like you did in step 5, but this time do it like this:

You need a texture for the front and a texture for the back, if your shirt has something on it. Don't use a photo of the back of the shirt, instead shop the pattern away from the shirt and save it as its back. Now you can't get any clipping mistakes.

Select the whole body, add its texture, move the texture to the right place, select its back and add the back-texture without moving it. It should be automatically on the right place.