Altering a shirt that is too short

In my closet, I have a lot of shirts that are just too short for my taste. I prefer to think that over the years they have shrunk. I have toyed with a lot of ideas for turning these shirts into useful items, you know, to help save the planet and everything. I actually made Kaelan a hat and scarf set out of three t-shirts. She's not particularly fond of wearing the scarf, but if I can get her mind off the scarf, she's fine. Anyway, I digress. For these shirts, I decided to see if I could fix the length.

I started with one plain white long sleeve t-shirt that hit right at the top of my pants and one brown t-shirt that was entirely too tight to be worn in public. Anyone know how to turn these pictures around?Using my handy dandy rotary cutter and mat (to avoid slicing my hardwood floor) I cut the brown shirt right across the chest under the armpits. This creates a tube which I shortened by turning wrong sides together.
I then pinned the right side of the brown tube around the right side of the white shirt as shown below.
Make sure the yucky edges of the brown shirt (that you cut) are matched up nicely with the bottom of the good t-shirt. Next you're going to sew across the bottom of the three layers.

There are some things to note when you do this.

• Make sure that you sew above the seam on the shirt so that it doesn't show when you're finished.
  
• Make sure if one shirt is smaller than the other one that you create darts by folding one shirt over (you can see this in the picture below). I chose to do this on the seams on the sides of the shirt. If you do this, make sure that the darts face the back of the shirt and not the front.

When you are finished, you might want to trim down the extra fabric along the seam. This was my finished product. Again, anyone know how to turn these pictures around?? So sorry!!
Hopefully you, too, can help save the planet and turn around global warming (cooling??) by refashioning a shirt.