Hello 'eunic',
So you admittedly don't understand anything about bidding on ebay but rather than find out all you
can in advance, you plunged in and bid on something anyway.
And now you've changed your mind.
You can retract your bid under certain circumstances. Bid retraction is considerd poor form on
ebay, so granted that you are new, just don't make a habit of it. Read through the following:
http://pages.ebay.ca/help/buy/bid-retract.html
It will tell you how to 'undo' your bid, and there is a link to a bid retraction form you can use.
And of course, you can always contact the seller and ask her to remove your bid for you.
She will most likely be glad to do this, -- and then promptly add you to her blocked list.
Since you claim to know nothing about bidding, if you think you might one day like to play around
in the auctions, you really need to have a quick look at how ebay's automatic bidding works.
There are related links like bid increments and getting outbid on the right:
http://pages.ebay.ca/help/buy/automatic-bidding.html#how
Good luck