Sitting too low on your nose

1. Use your thumbs to push the nose pads closer
2. Ensure they fit snugly against either side of your nose

Pinching your nose

1. Use your thumbs to spread the nose pads out
2. Ensure they fit comfortably on either side of your nose

Uneven lens height

1. Lay your glasses on a flat surface
2. Check which lens is higher

Uneven lens distance to eye

1. Lay your glasses on a flat surface
2. Check which lens is closer in
3. Bend the opposite temple arm in at either the hinge where it is easiest to bend