Do your artwork justice
The most important thing to convey in the photograph is your favourite part of the artwork. Make the image visually appealing and interesting to yourself, as this will translate to your audience.
No time for reflections
Reflections are the biggest challenge to photograph artwork. The best way to avoid this is to remove the glass or to roll some tape behind the photograph to change the angle.
Straight and steady
The best angle for artwork is straight on if possible. Ensure the image is not blurry. Try using a tripod to assist.
Keep it clean
Keep a clean background. Try photographing your work in front of a blank wall or table, without the background clutter.
Keep it natural
The best light is indirect, white light. When possible, take the photograph using natural light.