How to do a 90s blowout with a curling iron?

The two first photos are of me and my attempts to do a blowout with a curling iron (I used rollers). All the photos after that are what I’m trying to go for, sorta that 90s bombshell blow out. No matter what I do, I’ve seen several tutorials mine always comes out more as the Farah Fawcett style or just look like regular curls rather than the 90s bombshell. I cannot afford a Dyson, and a round brush doesn’t work. What am I doing wrong? Am I doing something in the wrong direction? Curling too much/too little? Using the curling iron wrong? Please let me know😅😅