cannot get my style to work the same each time

I have created a style that puts a drop shadow around the left hand and bottom edges of my image and saved it with a name.
However when I apply the style to my next image the drop shadow is on the right hand side and bottomd edge of the image. How do I make this style always apply the drop shadow to the left had side instead of switching to the right hand side??

I don't if this could help. But sometimes applying styles varies on the size of the object being applied to. For example you created a style for small objects then also applied the same style on a much bigger object you can observe that the two object will not be the same as you want it

When you're looking at the drop shadow in the styles dialogue uncheck "Use Global Lighting" then save the style. Should fix 'er.