Looks good! regarding the nacelles though; I dunno, they're obviously BIG, but I'm not sure if that's what's throwing it for me. I think if you look at the "JJprise" and the TMP enterprise especially most of the visual weight is above the "waterline" of the nacelle. this kind of gives a sense of the nacelle being "thrown forward", whereas your engine has most of the weight at the bottom, which makes it sort of swept back, and to me at least throws it off balance. I'd almost like to see what they look like flipped upside down. but like I said, it's a good looking ship otherwise!