Looking at your bids/listings, it is clear you are a buyer, not a seller.
As such, you do not have "reserve bids". You simply have bids you have placed on several items.
Bid is a commitment to purchase the item should you be the high bidder at the end of the scheduled duration.
If you wish to cancel or retract a bid you have already placed, please take a good look at:
http://pages.ebay.ca/help/buy/bid-retract.html
Read it again and follow instructions if they apply to your situation.
Otherwise, contact the seller and ask if he/she will cancel your bids. Many sellers refuse to cancel bids from buyers changing their mind.
