My suggestions:
If you are using Bitaddress, you will find
https://github.com/cantonbecker/bitcoinpaperwallet a little better. It is a fork of Bitaddress.org but it is created just for paper wallet and have same features.
2)Unplug PC ethernet or disable wireless network connection so PC is completely offline.
3)Extract zip file onto a folder on the desktop, then double click on the bitaddress.org file inside this folder to launch bitaddress offline website.
Okay.
4)Mouse around and type letters into the textbox until your public and private keys and QR codes are generated.
If you have special characters on your keyboard, to get extra entropy, type special characters too. See
https://bitcointalksearch.org/topic/m.103319925)Once generated, click on Paper Wallet and 3 wallet addresses with both public and private keys available to use. Highly recommended to plug into a printer via USB to print your Paper Wallets, then you should be able to fund them safely.
6)Once funded, place them in a zip lock bag or air tight plastic bag or laminated paper to water proof.
Okay.
7)Close out of the offline BitAddress site, and restore your internet connection
I would also suggest wiping browser data(history+cache+AppData etc...).
8)Stick them in fire proof safe or keep a few for spending.
One or two for long-term storage and a few other for daily spending is good.
It is easy to spend from a paper wallet, if you use one of these:
• Andreas Schildbach's Bitcoin Wallet(Highly recommended).
https://play.google.com/store/apps/details?id=de.schildbach.wallet&hl=en• Bitcoin Paper Wallet.
https://play.google.com/store/apps/details?id=ru.valle.btc&hl=en• Mycelium Bitcoin Wallet.
https://play.google.com/store/apps/details?id=com.mycelium.wallet&hl=en