Omg, I am in love with this art! Keep up the work! Also for inspiration I would recommend you to look at glass and canvas prints here. Here is all information you need to start working on such things – sizing information (image size, visible size, glass size, outer size), glass information (clear glass, clear Perspex, non-reflective glass, uv clear glass, uv non-reflective glass). And the main thing is that you can sell your own arts here, so this resource could be very useful for you!