Search in Cricut design space for the image you would like to cut. If doing wallpaper, multiply the image several times until you have as many as will fit on a mat (unless you are using smart vinyl).
Load vinyl into machine and allow the machine to make the cuts.
Unload cut vinyl from machine and weed the excess vinyl.
Apply transfer tape to weeded vinyl decals and cut around each one.
Remove white backing and arrange vinyl decals on wall how you desire. Press firmly into wall and rub out any bumps.
Slowly peel off transfer tape and admire your beautiful new walls!