I dont know if you want to go beyond a blowjob. It doesn't sound like it. Because you may think giving amazing blowjobs to a guy ought to keep him entirely happy. Well, it won't in most cases as you develop sexually.
You mustn’t treat a new man like your first bf, as all men are different.
You must learn not to relive past relationships. But, you can learn from them and not make the same mistakes. Sex is not degrading, including blowjobs or mutual oral sex, but it can be with the wrong attitude, like your first controlling boyfriend.
Avoid porn too as a guide for what a guy wants. A lot of that is sex for money made by porn studios, meaningless, often diverse, and nothing more.
As always, practice safe sex if you do decide for more intimacy. Avoid controlling men. And, don't manipulate them, either, as some girls do.