DOOD...way to go!!!

Talk about inve$ting in your off-road future...well done!
The fender flares that I bought from JCWhitney come in a roll. IIRC, I measured the wheel well radius (x4) to be sure I had enough, then cut the roll in four equal pieces.
Hold the flare (I got the ones with a re-enforcement wire in the lip...nuthin' worse than saggy flares) at the center & fasten it to the top center of the wheel well with the screws provided by screwing it into the inner lip of the cladding. Also remember to divvy up your screws into four equal amounts.
Once it's fastened at top center, hold it against the cladding & work your way from top center to the end, (bottom) with a screw every 3-4 inches.
A cordless driver/drill, tin snips, utility knife, (careful, I don't want to see any Biju finger slice pics) & an extra set of hands are helpful. Also, mini grinder or small bolt cutter is handy for trimming the wire, because it's just large enough to make trimming with a regular wire cutter a pain in the hand.
After they are installed along the entire wheel well, trim the ends with a tin snips or utility knife to make em' look purdy. Then put a little bend in the end of the wire & trim it close to the end of the flare. The bend in the ends of the wire keeps it from migrating & falling out.
Also, be listening for rear tire contact under suspension compression...you may (read: will) need to extend the rear bump stops.
Good luck...can't wait to see what you've done.