So, back in late 2004, right around the time the newer (newer back then anyway) Star Wars sets were coming out, I had been wanting to get try out making a self-designed X-Wing. It wasn't until I got my hands on that series' version of the Snowspeeder that I had all the right bricks to go about it.
Ah, yes, that was about the time I got my "new" X-wing fighter and was REALLY into Star Wars, so I noticed the problems in the set, mostly I did not like the front. Why am I saying that? Well, the nose seemed too long and "sharp", and the problem with your version is that it is even longer than the second official version's. The colouring details are pretty cool though, but I can not judge resemblance any more.