All you need is:
- A men's t-shirt
Make a 1-1 1/2 inch sip on each side of the collar and then connect the two sips in an even and curved cut.
Cut 1-2 inches off each sleeve (men's shirts tend to have long sleeves for their manly muscles). Keep in mind that the unfinished ends might curl slightly.
Cut 1-2 inches on the bottom, if the shirt is long.
And there you go!