My white button-up shirt was badly stained, so I went looking for a replacement but couldn't find anything that worked. Fortunately, the fabric shop up the street had a comparable pattern and some white cotton/linen blend.
It started out much longer, but I couldn't put my hands in my pockets easily so I chopped off a few inches.
Lots of top-stitching, and it came out pretty well.
I like how this shirt turned out, but next time I may track down a pattern with a collar stand. Camp collars work, but they're not my absolute favorite. Either way, this ought to get a lot of wear this summer and I'm happy with the result.