I think the glass needs a fisheye effect

I think the shading gives the glass enough of a fisheye effect. Good idea, author.

Nice idea, though perhaps left under there's also some highlight needed to give a more volume effect. Good luck!

I think it looks great. Nice find on the stock photos beautiful model. Goodluck.

Well, I think the view is from outside to inside the boat / submarine or something like that and here is from inside to outside....

Very cool! Nice take.

I really like this perspective and take on the main source. Nice to see it in a different position. Also like the color in the water area. Nice job, author!