beginners WIP= Charles W Morgan to generic merchantman.

I was given this old Academy Charles W Morgan (1:200) kit for nothing, sans a few crucial parts.

So I am intending to built it as best as possible, to portray a generic British merchantman of the later 1820s/30's. I have a couple of lovely photos I took from an 1840's book shewing the Brig 'Helen' registered of Hull, built 1830, which looks a very similar vessel in many dimensions.. 

Basically, as a beginner I have built it box-stock until now- when I have run out of plastic parts!

Decks are actually matchsticks, overscale but have a nice texture. Pictures seem to show a raised quaterdeck, but only by about 3-feet above the main deck- there certainly isnt a stern galley- is this correct?

Anyway, I shan't dwell on the model itself in such company, but I would like to ask if anyone could offer any advice on finishing this model- scratchbuilding deck details, etc

Any info or advice would be much appreciated. I am interested in ships of the nineteenth century, but havent ever tried modelling a ship before- it is quite a learning curve I am on!

Will