Kickstarter may not be the best way of approaching this. It only has a 50% success rate to start with. You're starting with a non-visual medium, so you don't have cool pictures to get people excited with it. But worse than that, you've asked for feedback on your script in the Kickstarter. Bad move, kiddo. That doesn't say "I'm determined to make this awesome" to most people, that says "my script isn't ready". If your script isn't ready, you're not ready.
You also haven't said what you'll spend the money on. That's absolutely necessary. Why are you asking for $2,000? Would $1,000 not do? The potential funder can't tell, because you've not said what you're spending the money on.
Honestly, it looks like you've jumped into this becuase you're passionate about getting it made, but haven't stopped to consider that Kickstarter isn't just some magical money source. It's a business structure. If you want people to take you seriously, you've got to treat this like a business, with appropriate seriousness and consideration, not like a hobby.
1. Go away and get the script finalised. Get feedback on it from people who write comics and people who read comics. Make it perfect.
2. Scout out artists you like. Find out what their rates would be for comics of the length you're working on.
3. Save up some cash yourself, and use a bit of that to get some artwork from one of the artists you like. Not a comic page, but maybe some character designs. Something you can put on the kickstarter page to get people interested in it.
4. Do some research into the money thing. How much does the artist cost? How much money will you need to print X number of comics? What about digitising them so you can give some in your donation rewards as pdfs? How much of the funding you recieve will go to taxes? How much will you need for postage and packaging of the physical rewards?
5. Do some research on distribution. How is your comic going to be distributed? Do you have agreements with certain stores? What about online digital distribution channels like Comixology? What will you be able to reasonably charge through those channels, and does it cover the costs of printing etc?
6. Work on your pitch. As it is, it's kind of boring, lacks a lot of the info you should be including, and is in the wrong order. If I was doing this, I'd start with a punch - something cool, exciting, active about the comic itself. Not the origin story with your hero getting hit by an SUV, that's boring. Maybe a prose retelling of the fight with the dogs, that could work. Then second paragraph, describe the comic. What genre is it? When is it set? Give a brief blurb. How many issues will there be and how long will each issue be? Third paragraph is about the money - what it'll pay for, the artist and the distribution and the taxes etc. Then a nice picture. Next you need your credentials. What have you written before, preferably that is published. Having published stuff, even if it's just published on your blog, gives credibility and lets the doubters check up on you to see if maybe they should fund you after all. Then you can talk about why you love comics if you insist, though at this point I'd put a few character outlines, along with images of them. Maybe the five most important characters.
Once you've written your pitch, get feedback, preferably from someone who has completed a successful comic kickstarter. There are one or two who are/used to be active on this forum.
7. In the meantime, work on your drawing ability. If you can at least get some character sketches done yourself, it'll be easier to convey what you want to your artist. And if you end up not getting funded, then you've got a headstart on Plan B: draw it all yourself.