shaved tails and corners

my friend and I have welded up my tail gate, frenched a tag box, shaved the handles and gas door and body lines, but i dunno how to fab taillight and corner light fillers, the body line ridges look super hard to bend or roll, so how has anyone else done it? i want the upper body line to go right to the grill on the front corner fillers, like that silver standard cab with maxwells tribal graphics on it,