Help in bedroom

I am 27 years old and not confident in the sex department. I am married and my husband has never said anything but he also hasn't complimented me in a while. I am not great at being on top. I am also not great with blowjobs. Any tips are appreciated. I am plus size (6ft 260ish pounds), I am always afraid of squishing my husband or my belly fat looking gross during sex. Just want to make him happy in the bedroom. I do take direction well when he tells me but he often won't say anything.