So, I have been on this re-do, up-cycle kick.  Recently, I have been remaking old sloppy shirts into ones that fit me just right!  Here is an example of a shirt I recently remade. 
Before: 
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| multicolor plaid front | 
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| multicolor plaid back | 
 This shirt had some good bones, the collar and front tucks were a step in the right direction.  I removed the sleeves and cut out the excess on the sides.  I then took the tucks that were already there and took them all the way down, front and back.
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| Shirt back, tucks running the length. | 
To give the shirt more interest, I made the tucks in the front into Mexican tucks. (Which means the are sewn opposite to give a wavy illusion to the fabric).
After that was done, I cut off the sleeves to make them short, but I retained the cuff.  Why do more work than necessary.  I finished all of the seams and tacked down the collar.  
I wear this one all the time now.