...Recommending sites that pay for icos' reviewing is highly appreciated.
Don't wait for others to reach out to you. If you feel you're a good reviewer, just hit up all the major review sites and offer them your service. Have a sample of your work, describe your usual methodology etc.
If that doesn't work, start your own blog ie with top ICO picks of the month, share the content on this forum (dedicated thread), Steemit + on social media. If you get any traction, you could start charging ICOs for featuring them.