I'd second Jaitea:

working with say SW-style ships and aproaching the weathering stage you have an option of not only geting your model closer to the "original", but also to hide all of the mistakes under the layers of washes and pigments

Trek is absolutely another story: here, especialy on the TOS-era ships absoluteprestine condition is required to be kept through the whole process of construction.

And You've done it brilliant so far, trekriffic, bravo!