comments needed on New woody design

I know that there is really nothing new under the sun but I would appreciate comments on my design for a woody. I originally designed my standy with a typical curved profile but now I'm leaning towards a squared off version with wide ash trim (posts) with cedar shiplap plank in-fill. I'm thinking of using copper or brass nails to fasten the cedar and leaving the nails exposed for a shiplap boat look. The exterior would be fiberglassed. Any thoughts on the design or exterior finish would be appreciated.
I only have pdf files so I hope this works!
I only have pdf files so I hope this works!