You should make a video and put it on your computer. Than you watch the video with VLC-mediaplayer. Play your video with it, in the navigationbar you click on video, in that section you momentshot or something like that. When you use that, you can get a picture ofyour "flying cumshot". You just have to play the video and put on pause on the right time, click on video and then momentshot and voîla, you have your moneyshot!
Good luck with it!
Ciao