remove under cover, corner under covers, remove wheel arch liners (if you want...makes access easier, otherwise unbolt them from bumper and reach around), remove side marker and trim, corner lights and fog lights, remove grille, unbolt the stays on the inside of the bumper on either side and walk the front end looking for bolts...basically, anywhere you can see the urethane bumper gets close to metal you can expect to find a bolt. Keep pulling bolts until it practically falls off.
Is there a specific area you are having trouble with?