That is not how I imagined that looking at all...
Not a criticism... maybe I imagine things wrong.
Guess that's true for anyone, as you read the book your own imagination makes up the images so everyones idea of how it looks should be different also influenced with your own knowledge-, I know from the description it would be huge, it has the power to build stars and planets, it cant be too big otherwise its own mass would create a similar effect our moon has on the earth, also to keep it as forerunner looking as possible I gave it a roughly similar shape to the sentinel only with a high energy graviton generator at the bow of the ship (yes I thought of it before 343I put it into Halo 4 ) could also imagine this ship being weaponised for the flood war, we've seen how helpless the Infinity is in its grasp.