Here's some pictures of Smaug as I assemble him. Overall its a fairly straightforward assembly... probably a standard forgeworld type model with some fitting and trimming necessary. The mold lines are mostly good, with just a few areas that need touching up. The scale is starting to get impressive... as I get closer to finishing it's going to get huge.
I'm also pretty sure that I'll need to magnetize the wings... I don't think I'd be able to paint the model with them attached, so that'll take a bit of extra work.
I've also noticed some evidence of 3d printing. There are some areas (where the wings attach) that you can see some small ridges that are left over from printing. You can see them in the third last pic below.