First ever model Ive painted and gotten close to completing. thoughts?

Still need to do the tracks, and glue in gun assembly as well as various accessoires.and fix some of the paint

I am hesitant to do the track yet as I have not weathered the model, however I do not know how to do that, so am debating just going for I with the tracks and accessories and not even trying to weather it.

But I'm undecided, what do you guys think? And thoughts on the model in general?