Cut under the pit of the oversized tee.

Then cut the bottom piece of the remaining shirt

Now u should have a looonq rectanqle.

A pic isnt really neccesary but here u qo. lol

Then cut a biq whole in the middle.

Remember your head and shoulders have to fit through thol whol so cut accordingly.

Also this is what u might need the bowl for.

Now; the trickiest part is putting the vest on.

Just slip it on your shoulders from behind. A strip of fabric should be behind your nech like in the pic