I got out the serger and sewed the side seams on the shirt.
Then I serged the leg seams of the pants/ leggings.
And then of course the front to back seam.
To finish the shirt I have to cut the jagged edges (which I of course will do after checking the length on my son) and add the collar. The pants need elastic and a hem. I will also be dying the pants and not the shirt like I originally thought. After watching the animated version of Peter Pan I noticed the pants were darker than the shirt.