It's pretty simple.
1.) Go on your fantage account or wherever you want to take your picture
2.) Just click 'Prnt Scrn' or something like that and open paint
4.)The whole screen should appear, and then use the selection tool
5.)Select the area of your fantagian or something with the selection tool(that box with those line line line stuff o.o)
6.) Crop it
7.)Save as PNG
Just keep paint opened, not close to your fantagian though, and press Prnt Scrn, Ctrl, and V and the same time and it should be there and just crop. And save. o.o