Get an under shirt that goes with your main shirt.
Get a long sleeved shirt that buttons up and tie the bottom of the shirt up where the buttons are. Tie it in a not
Put the not over your head so when you let go it hangs over your neck
Flip the bottom of the shirt so it looks clean and not weird. Then tie it up just once not In a double not
Then tuck in the sleeves under the sides of your shirt