5 x 10 Benroy

I would like to stretch the 5 x 8 Benroy generic to 5 x 10. I laid out the 8 foot generic on a piece of 4x8 plywood and it seemed too short. Has any drawn a 5 x 10 generic Benroy?
I can add 2 feet in the middle where the roof is flat but the lines don't flow. I am CAD challenged so I just draw on graph paper. any suggestions appreciated. I'm not ruling out other 10 footers as long as they have the classic teardrop lines.
I can add 2 feet in the middle where the roof is flat but the lines don't flow. I am CAD challenged so I just draw on graph paper. any suggestions appreciated. I'm not ruling out other 10 footers as long as they have the classic teardrop lines.