While some Windows Phone photography apps have a sharing feature native to the application some, such as Cinemagraph (here's our review), don't. In these cases you rely on your Windows Phone Pictures Hub options to share these images.
You've just created a fantastic animated GIF through Cinemagraph and are eager to share it with friends or family. Once the image is saved to your Windows Phone, head over to your Pictures Hub and go into the Camera Roll gallery. Find the Cinemagraph image you want to share, pull it up to full view and tap the three dot menu.