Hello everyone

I decided to start a new model this morning. I finally (after looking forever) found some nice blueprints. (https://www.suurland.com/ <<< great blueprint site) I found blueprints for a dodge viper (one of my favorite cars). I recently posted and thread on box modeling and mtmckinley helped me to understand that more. I wanted to try that out but the more I looked at the viper I decided that box modeling probably wasn't the way to go. Mainly because the viper is all smooth curves, there are almost no hard edges etc. My problem is I have never modeled by patch modeling ( i think that is what I am doing) I have attached an image to show you what I am doing. I just need some advice and where to go next. I have drawn a profile curve but I don't know where to go now. please help.

P.S. sorry about the image size, I tried to make it as small as possible.