The experiment.

Necessary elements: Atmospheric pressure, a glass with water and paper.
Aim: prove that the water doesn't pour out of the flask, owing to the power that arises because of the difference in atmospheric pressure outside the vessel and the pressure that is formed in between the bottom and the surface water.
Method: First, pour water into the flask; for the beauty add acrylic paint into the water; put from above of each flask a sheet of paper over the top of each flask; while holding hand a piece of paper with your hand, flip the flask. With the flask filled with liquid covered with a paper sheet, press tightly against the hand, turn and keep the flask for a while in this position for a while. During this time, the water wets the surface of the paper and it "sticks" to the walls of the flask, due to surface tension forces. Then, slowly remove your hand and watch the result.
Conclusions: the results obtained show that our hypothesis was proved. Really The water doesn't pours of the flask ,owing to the power that arises because of the difference in atmospheric pressure outside the vessel and the pressure that is formed in between the bottom and the surface water.

[Good work. Most of the corrections were subtle differences in phrasing.]