The DN looks too skinny IMHO. The DN has four sections: Section 1. Command pod, Section 2. missile pods 1-2, Section 3. missile pods 3-4, Section 4. Engineering/warp
If I may make a suggestion, I would make Section 3. identical to Section 2. but angle the missile pods up and down respectively so that as you look at the DN head on you get an 'X' like profile.
Also the fleet as is, looks like skeletal animals where the missile pod arms look like ribs exposed on a carcass. This may be an intentional pyschological warfare type design akin to what the Vikings did to their dragon headed prows of many of their long ships... The skins for these ships will be very interesting. I hope you try to use the Taldren Tiger striped Mirak ship markings.
The DD looks out of place in this line up. It looks way too heavily armored when compared to the rest of the fleet. It looks like a Star Wars Episode I Republic Counselor ship crossed with a battering ram... Watch out, if the Mirak missile barrages don't get you we'll just ram you into oblivion...
Nicely done over all. The CV and the BB should be awesome to behold!
Qapla'
KF 'Klingon Art Critic at Large'