Ok thanks guys. This turned out to be a treachure chest with hints and tips.
An overview;
Don't ever use the pencil tool.has no softness to it.
Only use brush tool and spray tool. Be sure to set the brush to have a certain softness so you don't get those jagged pixels.
generally find it a nice thing to make the picture in double size. Makes it easier to paint certain things and go into detail.
Then when I'm done I scale it down 50%. This makes different parts blend together very nice.
Making cracks in the stones, make a thin bright line along one side of the cracks and a dark shading on the other side.
Make a new layer and use the flood fill tool with a gradient to create a sense of illumination.
Remember torchlight isn't white though, but red/orange/yellow.
Add some slight hint of grain or noise before the additional items and the lighting layer comes, it makes more the impression of stone instead plastic.
Torchlight are going the right way (away from the torchlight).
Sharpen is the high art of photoshopping!
Find better quality items to start out with.
So following these advice as good as i could, i made a new tile. One with light and one without.
Not to happy with the shape of torch, any tips on that ?
Still much to learn so please comment a happy amateur.