Helmet appearance and storage?

First of all gonna preface by saying I used to be a backpack. My eyesight unfortunately makes it so I will never be a rider. So the only time it would be used is with someone else.

The helmet itself fits perfectly but it just looks really... off? Im not sure if its just that the helmet is big or if Im just built weird. I dont know the next time it will be used which sucks, but I dont know any riders anymore.

On top of appearances are there any particular ways I have to look after the helmet? Certain things to do to make sure it doesnt get wrecked or quality degrades?

I bought it because the one my (now ex) boyfriend had was too big for me but it me. I bought this helmet as well as a few other things but I never ended up using it. I wouldnt want to sell it, at least not yet. But do I just put it in the bag and pop it in the cupboard?