Use a tape (or by reference) to determine the width of the plank you need to rip.
Using any kind of straightedge or level, draw your rip line from the mark you made when measuring.
Depending on the length of your piece , Stikwood can be ripped to width with either a jigsaw, utility knife, or a table saw. Start your rip from the mark and follow the line.
Before installing your ripped piece, dry fit the Stikwood into place. Dry fit means assembling the piece(s) of a project to check their fit before application. If the piece fits, remove the adhesive strips and install. Secure your piece into place with the J roller.