
1. you need to build abs. use exercises you can add weight to and go to failure. i recommend cable crunches. isolations like planks aren't good for hypertrophy. 2. you need to be at a low-ish body fat percentage. you can calculate this yourself, or guess visually. if you're overweight you'll need to cut down. keep in mind a lot of advice that's "just diet" is for men. as a woman you likely do not have enough ab muscle to show even if you diet, so prioritize building muscle for several months