The beautiful Merchant & Mills Dress Shirt pattern in tissue format is one of my favourite things. I learned about Merchant & Mills from a creative friend in the UK. They are an independant company situated in Staunton-on-Wye, and although they've only been in business since 2010, their clothing patterns have spread quickly in North America through Pinterest and word of mouth.
The patterns are created by Carolyn Denham, who started sewing at 8. She makes patterns in heavy card stock that you chalked around onto your fabric, but they now offer new tissue patterns, which make them easier and more affordable to ship.
Check out the beautiful Essex yarn dyed cotton/linen blend. A great match for the dress shirt.