The microscope only shows a sharp picture at a specific distance; as soon as you tilt something, most of the picture becomes so blurred that you can't see much anymore. And there's not enough space between the lens and the focus point to really tilt the device much, anyway. Sorry!
What is the microscope that you are using?
A cheap Bresser. Though I wouldn't recommend buying a low-end microscope, like the one I use. You should be able to get much better images by investing just a bit more.