Very basic things women want in bed, but you forget to do

Mental calm when it comes to protection.

Be prepared and equipped with a condom unless you decide together not to use it. Or don't complain if she leaves the room or wherever you are and leaves you like that...

A Partner Who Seeks Their Pleasure

To be a good partner means to work for him in the same way that he does for himself.

An orgasm
Sex should not end with just a male orgasm, much more if she has not yet passed hers. If you know you'll be very tired of your orgasm, make sure she experiences hers before you. It's not science, it's mutual pleasure.

Communication
No talking sex and just grunting and screaming has its time, but it's always nice to have someone in your hand asking you what you want, or if you want to change something.

A Clean Bed
It's hard to let yourself down if you can feel bones under your back, or put your head down in a bed where they can have more dust in front of you.

Foreground
It's not a race until you reach the finish point. Take your time and play just before the actual act begins. You'll feel more charged.