It was the best I ever ate, made by a chef in Liverpool
Nice picture I'm a fan of HDR although I prefer to add more like the shot I uploaded.
When inverting a glassplate it automatically becomes a positive it's just called a negative
If you need help just ask
I don't think you can clean them but if you use cs6 you should be able to clean up the image
Invert the image it will convert it to a negative
Moving up from compact cameras is always good, yes use auto when you feel the need, but keep unsing manual mode try all the settings and enjoy your photography. Good luck