Step one: collect all the sand on the entire earth.
Step two: melt it all into a LOT of glass.
Step three: make a giant magnifying glass.
Step four: magnify the Suns light and shine it at the nearest planet. Just like the death day on the Death Star.
Step five: the planet will melt, and so will your magnifying glass.
Step six: now that the planet is gone, the gravitational balance will shift, causing earth to go flying into the sun. Yay.
Step seven: the sun will explode, and destroy the solar system as it turns into a black hole.
Step nine: the black hole will swallow the entire universe and every dimension. Even Harambae.;(
Step ten: congrats, you killed the universe!