I'M NOT SURE WHY THEIR IS A STATIC/HISSING NOISE TOWARDS THE END..APOLOGIZE!
(I SERIOUSLY DID NOT DO ANYTHING TO CAUSE IT LOL)
IMPORTANT POINTS MENTIONED :
USE THE PENCIL TOOL (INSTEAD OF THE PAINT BRUSH TOOL) TO COLOR IN THE PIXELS OF AN OBJECT.
SHORTCUTS MENTIONED :
SELECT ZOOM TOOL AND HOLD CTRL + (TAP PLUS BUTTON) = ZOOM IN
SELECT ZOOM TOOL AND HOLD CTRL + (TAP MINUS BUTTON)= ZOOM OUT