Welcome to the forums! You should note that the person
receiving paypal is the one at risk, because the sender can initiate Paypal chargebacks. You may want to join the
#bitcoin-otc IRC channel to negotiate trades via chat. webchat
here.
People will be more likely to trade with you if you create a GPG keypair and link it to some known credentials, e.g. ebay feedback. Details are on the wiki (linked above.)