How to feel more confident during sex??

I don’t feel confident anymore having sex with my hubby (my fault not his) I just .. it’s just I recently had a baby and I don’t feel confident I try and wear things to feel confident but I don’t my husband always tells me I’m sexy but I want to feel it you know and I just need some advice on how to feel sexy during sex like what do I do ?? What positions would help me feel confident?