ok, What program are you using? if your using photoshop follow the link to skinnerz kits and download the appropriate kit. Also do you have the Cmx viewer? if not get that. The kits will help with lining etc.
Trying to blend those flames from front to bonnet and sides is never gonna be an easy task, even for some of the most talented skinnerz around. Honestly i think you'd be better off working those flames onto the bonnet another way. Dont get me wrong, it would look sh1t hot if you did it but thats a lot of work (might be possible with a graphics tablet....).