i like your renders, but the background is always(!) darker then the object what you put in it, try to change something on the hdri settings or the render settings or the lights if you use some
The skin should not show on the inside. You should have a black/dark grey kind of material for the inside of the helmet.
You could try adding a 'Shell' modifier.
Why not just add 'shell' modifier. It lets you control the thickness, automatically gives you material IDs for outside, inside and side materials. Even more simplier.
I came to ask for a render. I need a render with my team skins on cars: FXR+XRR.
Here is an example how the cars should be placed: Click (You can choose the position for the cars, either FXR at the back and XRR in front, or the other way around.)
The render is for the team's banner, which won't be bigger than 500x100px at the end, so don't place the cars too far from each other. Make the render as big as possible, and in good quality. I would also prefer, that the render is done in 3D Max, so the cars look more realistic and better.
The background should be white! Or I don't want any background pictures for it. Just a simple background, in some places darker, but in some lighter. (Well, you know better).
It would be great, if there would be also nice rims on the cars, and if you want you can modify the spoilers etc., but only if you want.
So, please someone make the render for me. I hope I didn't ask too much.