i did mine with the heat/bend method and it looked unrealistic, so tried a foiled impression replacement and this looks much better
i got some heavy foil (it was sealing a beverage can). this was pressed over the straight panel. i then bent it up, then back filled with bondo to hold it's shape. Since the foil is silver, any where it is scratched shows as metal. a bit of grey and black will help the look. if you want primer to show through, sticking some poster tack or liquid mask before top coat.
eleanor01 by aus_mus, on Flickr
eleanor02 by aus_mus, on Flickr
eleanor03 by aus_mus, on Flickr
eleanor04 by aus_mus, on Flickr
eleanor05 by aus_mus, on Flickr
eleanor11 by aus_mus, on Flickr