This is a flip on See Kate Sew's Recess Raglan. I should say this is my first flip on this pattern. I have a plan in the works for my next one.
Basically the only difference is a sleeve variation.
Here's how you do it:
Start by cutting your sleeve pieces right at the corner.
Cut a curve out of the bottom of your sleeve:
I measured a piece of ribbing to match my sleeve (I didn't want it to stretch). Fold it in half.
Pin it right sides together and sew.
Sew ends together.
Finish the Raglan like normal and love your little man in his shirt.
Love that face: