If you find the paper keeps tearing, try using a slightly thicker dense paper for more durability.
Ensure you have an odd number of cuts to make the loop work correctly. Get Out
If you cut all the way through any strip, the chain will break and you'll have to start over. If you find the paper keeps tearing, try
Look at the folded edge of the paper between your two original end slits. Get Out
The thinner you make your strips, the larger the final loop will be.