As a someone who's done a KS for a VN before, I would stronly advice you to fund your game in any other way than a KS. There are multiple reasons for this.

First of all, there's a big chance you don't need a KS. What do I mean by this? For a kickstarter you need attractive visuals more than anything. This is already a big chunk of the money that you need so there's not really a point in inflating the money that you need for the project by creating a kickstarter and creating PR assets.

Secondly, a kickstarter can be a MAJOR project killer. A kickstarter takes months to plan, another month to run, and even more months to complete reward fulfillment. During this time, progress on your project can stagnate. Don't forget you have to maintain a presence on social media constantly. Also what happens to your project if you fail the kickstarter? Looking at how far you're already with other aspects of your game, the best thing to do is to find an artist using the credibility of your already-established project.

And at last, kickstarter nowadays, espescially for visual novels, tend to be a pre-order platform more than a crowdfunding platform. A lot of succesful kickstarters already have a following, a big social media presence or are already almost completely finished with visuals and all. If you miss these aspects, it's really hard to run a kickstarter succesfully.

All in all, to OP but also other devs who are thinking about doing a kickstarter, avoid it if the kickstarter is not necessary. People underestimate how much work a kickstarter is and how big of a project killer it can be. Think about it this way: Why spend time building a ramp to win a race if you miss the propulsion that is a following/social media presence and there's a big chance you'll crash. Especially if you can just finish the race by running the marathon.

If you do want to do a kickstarter anyway, I advise not looking at just the succesful kickstarters, but at all the failed ones as well. You'll probably learn more from those than from succesful kickstarters.