Insecure

So I love giving my boyfriend blowjobs and he loves them and always finishes but everyone always says that they love it when you look at them. But for some reason I can never get myself to do it.. I feel insecure like I look funny or don't look good while givi him one and don't want him to see me I guess... Idk how can I get over it? Is it really that big of a thing?