All you will need is your Washi tape and your EC ruler! Or any plastic ruler or laminated edge.
No scissors needed! Every time I use a scissor my tape ends up cutting diagonally!
Step 2: place your ruler's edge to the line where you'd like to cut the Washi
Step 3: hold your Washi close to the edge and pull upwards to rip it against the edge
Hope that helps you out in decorating your pages quickly and easily!!