Step 1.. finish your CFI and go instruct for another 1200 hours
Hopefully by then you will have close to ATP minimums, and some of the airlines will be hiring again. Even if you get hired, you are a minimum of 6-7 years from even having the minimum requirements for seeking those type of jobs, and that's considering you can move up and get typed on a 737 or 320 and actually have some time on it.