Embarrassed during sex. Please read.

So, me and my other half have amazing sex but I just feel embarrassed. I use to feel so sexy and confident and for no reason I feel embarrassed and ugly. I don’t know where to put my face, I get embarrassed when I can feel him looking at me. It is through no fault of his own and he is forever telling me that I look beautiful and he loves looking at me, do you guys have any tips on how to make myself feel sexier and more confident. I just want to be able to look at him and not feel embarrassed. I want to spice things up abit but I’m not too sure how, any advice would be great. Thanks so much for reading❤️