What you'll need:
- red heel socks
- needle and white thread
- embroidery floss (black, plus team colors)
- small amount of white jersey knit fabric
- small crescent of flexible plastic (for hat brim)
- small amount of fabric in the appropriate team color (for hat brim)
- fabric paint (team colors)
- black permanent waterproof marker
- optional: serger or sewing machine
Step 1: Make the monkeys
HERE'S SOMETHING REALLY IMPORTANT THOUGH: they don't make socks like they used to. Seriously. At some point in the late 80s or early 90s, the manufacturing process for the socks changed, and the toes and the heels aren't as big. The shape of the red heel is not the same either, it's less "smile-like." Because of this, I go on eBay every once and a while and buy vintage red heel sock packages. They are almost always available, and the monkeys turn out a lot cuter, in my opinion.
Since I like to give the monkeys out as baby gifts, when I get a new/old sock three-pack I usually knock out all the monkeys to keep on hand to customize when the occasion comes up.
Step 2: Team Jerseys
Cut one back two each of the sleeves and front. I used a serger to piece this together, but I've used a regular machine or hand sewing in the past. After the pieces are together, cut a long strip about an inch wide that can run up the side and around the back of the collar and back, and bind the edge with it. Sew the front sides together (unless you feel like making tiny little buttonholes and sewing on tiny little buttons.) Hem the sleeves and shirt bottom.
For the Nationals jersey I added the red trim around the binding. The O's don't have that detailing.
Sketch out the jersey lettering lightly in pencil. Fill in with fabric paint. Afterwards, go in with a black permanent waterproof black marker to do outlining.
Step 3: Embroider the cap logo
Lightly sketch the logo onto your hat piece - to the extent possible. I didn't have a pencil up to the task to I largely freestyled it with the logo(s) in front of me on the laptop screen.
Step 4: Assemble the cap and sew to head
Cut a crescent of the plastic and sew a cover over it with the fabric of your choice. Sew the brim to your embroidered hat piece.
Pin the cap to your monkey's head and sew the cap on.