Looks off to a good start, but it's too symmetrical the way the blister-pods are distributed. Mon Cal ships have a vary assymetric design in that respect.
Also, Are modeling the MC80 Liberty? Because that MC80a is a variant that popped up after Endor or so and looks very similar to the Calamari Cruiser design that Totally Games used for TIE Fighter and X-wing Vs. TIE Fighter. And yes, I do know that loads of sources tend to contradict each other on this front, but in terms of Return of the Jedi, there are three Calamari Cruiser types, the MC80 Liberty-class, the MC85 Home One, and the MC80 Reef Home-class (which is basically the Liberty without the wings, and an extra engine down the middle replacing a blister).