Photospheres often suffer from image artefacts, empty spots, cut off objects or bad stitchings. To improve your results, you should read the following lines. It's recommended to take Photospheres while holding your smartphone in portrait orientation. Considering this, a full sphere is divided into 7 rows and consists of 52 photos. You start with the middle row which consists of 14 photos. The rows above and below consist of 12 photos whereas the top and bottom rows consist of only 6 photos per row. The top and bottom spots are covered by 1 photo each. There's no need to take all 52 photos. However it's recommended to complete at least the middle 3 rows. Leaving out the top and bottom rows or spots is not a big deal at all, but will result in black bars or bad stitchings.
While taking the photos have a solid stand, hold your arms still and as close as possible to your body and slowly move around your phone. The camera is and should remain the center of the image. The smaller the radius the better the result. Whenever you start with a new row, never - really never - move your arms up or down. Just tilt your phone and keep turning around your device slowly and steadily.
Photosphere Rule #1: Rotate your body around the camera, not the camera around your body.
Keeping this in mind should help you to achieve the best results even indoors. Following the above basics allows you to easily create stunning Photospheres. If you prefer to watch a video tutorial, we recommend this official video from Google. Remember: You don't have to share your Photosphere with Google Maps. Skip this step and use PhotosphereViewer.net instead!