When glycerine is put on the slide, it does two things: 1) it makes the surface moist 2) When glycerine is put on the slide, it forms a depression in the centre and it obtains the shape on a concave surface and hence diverges the light rays a bit providing the magnification to view the given specimen.
"Believe in yourself."
If you think you can do it , then you will do it .
Your fate is in your hands.