Hi Carlosagrr,
I understand that you are new on eBay. If your feedback isn't that high yet, then, work on it. It does not only build customer trust, it also helps improve your search standing and listing visibility. For more information on this, you may go to this page:
http://pages.ebay.com/help/sell/searchstanding.html. To increase your feedbacks fast, you may list as many items as you can at good prices and make some small purchases yourself.
Then, of course, you need to work on making your listing attractive, informative and accurate. Take great pictures. This is a surefire way of getting more bids and high sales. Making your description detailed and informative is also another way of getting potential buyers to hit that Bid Now or Buy It Now button. This is specially true for your product since as you have mentioned it is new. This would be a good chance to introduce it.
You may also try offering fast and cheap shipping. It would be great if you can ship on the same day that you receive the payment and state this on your listing.
Once you make that first sale, provide excellent customer service. Make a good impression to encourage repeat purchase. Make the packaging presentable and include a business card or even just a simple card to thank your customer for the purchase and signing it with your eBay ID.
Hope that helps! Good luck!
All the best,