The bigger issue here is that you need to get a tripod and proper lighting for what you're using that camera for. There's no excuse to produce photos with shoddy angles and poor, uneven lighting. At the very least, you could run your photos through Photoshop to correct the perspective and lighting before you upload.
Just a tip, if you're gonna bother to take a really high res photo of your work, you might as well also mount the camera properly (especially to reduce blur and to square up the pieces to the frame), and then crop and color correct the pictures. Your art isn't bad, but the presentation could be improved.