Make two paper wallets (or more). Send a small amount of BTC to the first one, then sweep it back into your regular wallet (desktop/mobile/whatever). Once you're confident you know how to get your bitcoins back out, you can send them to the second paper wallet for storage. DO NOT REUSE THE FIRST WALLET! Shred it after you get your bitcoins out.
But why do I need to also test sweep the first address? Is it not enough to send coins to it and see that they arrive there?
"Once you're confident you know how to get your bitcoins back out" - That is never more complicated than just importing the private key to a wallet? So why go through it in a test run first?
You can't just sweep it back into your normal wallet without replacing that wallet? Or can you?
It is a big pain to have to find a second wallet to be able to sweep to.