Its coming along. I take it you've drawn the hull from scratch? Not bad, but a few things to correct. The armour belt is not continued correctly below the waterline. The darker shading looks wrong: its two pixels wide in a quite dark shade, better to have either the one or vary the shades - I'm probably not explaining this well, so just have a look at a similar sized ship on the forum to get the idea. you've 'cut and pasted' one of the screws but taken the shading with it, so it isn't correct. We always give our names in upper and lower case, not capitals.
I'm interested in the change of colour; is this what was applied, or are you on your way to the standard grey? You might want to consider adopting a camouflage as well. Re the extra details, I'll see if I can find anything on the Colony class, but I'm sure others may also be able to help; and you can always google 'Colony class cruisers pictures' to take you to a lot of what is on the web