How complicated is the Alternative Vote?

I've been slightly bemused by claims that the Alternative Vote (AV) is more complicated than the voting system we currently endure in the UK, First Past The Post (FPTP). So I made a flowchart to show how to vote under each system. You can decide for yourself which is simpler. And (if you are eligible) on 5 May you can vote for whichever system you prefer to be used for UK General Elections, whether you vote "Yes" to introduce AV or "No" to keep FPTP.