It's nice, not stunning, but very solid work.
While I don't agree with Ernie that the rockets seem "too modern for 40k" which I think is a weird concept, they seem random and out of place.
Apart from that, I like it. Unusual, but I like it.
Tower and rockets dont fit to the WH40K style. They look to modern. And the base of the tower is to narrow to stand the recoil of the cannon. It would break off.