TBH I can't, not exactly. I mean, there is no up or down in space, right?
However, the front of the shipe is at the "head" of the wider part, and we know that because of the way the ships orient themselves, in the battle scenes of DS9 for example. It's also more aerodynamic, and I know there's no air in space but those ships do go through nebulae on occasion, right?
Also, there is a strong similarity between the Galor-class warship and the Cardassian emblem (which I see you have on the bottom of your image). The emblem appears everywhere, and it's never upside-down. They're almost fanatical, hehehe.