Hey! Thanks for the credit. I think it is my first one. Even though as you state yourself this could just as easily be to someone else, in fact the only thing I see that resembles my designs is the sideways idea and the design process itself. I even see a closer resemblance in the hull with the modern ship designs of Alex Charbonneau
http://www.mocpages.com/moc.php/307297
I see that you have asked about the bow design earlier, sorry for this late response. Itīs made as a horizontal version of the sideways roofing technique
http://www.mocpages.com/moc.php/307885
You can see it in all my LDD ships but here is a brickbuilt version
http://www.mocpages.com/moc.php/306795
As for the color: Copper or no copper it all depends on the time period. The HMS Nymph was built in 1778 so she would probably have been copper sheathed, if you are content in having this as a LDD model you should do this as a combination of green and some metal color (my orange solution, is a compromise based on the selection of bricks available as standard on PickaBrick and Bricklink). However if you want this to be any member of the HMS Swan class you could go for a white hull and if you want it to be any sloop of war you can go for a black , brown or even a grey (lead sheathed) hull. More on this here
http://www.mocpages.com/moc.php/310216
Sorry about the wall of text and self reference it looks like itīs going to be a great ship. Good choice for a moc, the Swan class sloops were beautiful.