So how should Galactus be done in the MCU?

I'd prefer something along the lines of Kronos from Clash of the Titans (or was it Wrath of the titans?). Someone humongous and semi-wreathed in smoke, lightning, fire, etc. So you never get a clear full look of him but get shots here and there. A shot of his face here, an arm there, a torso for a split second, etc.

Because I feel like just showing a purple-armored giant with robot horns won't translate well to film.