Press the Print Screen(or Prt Scr) key on your keyboard and go to Paint and paste it. Then you crop it whenever and save it in a format you want. ^^
One of the biggest Nuka fans on this forum! I am CrazyNuka but you can also call me CN or Bobby! Let's be friends, shall we? :3 I won't bite! Hehe! I'm just so crazy! Haha!