Ink Onions

This one isn't as successful as the other two - I was just going to do an onion, but it didn't really look interesting enough, so I cut it in half and drew both sides. Why wasn't it as successful? Although you can see what it is, the halves don't correspond properly - obviously, they are quite different inside, but not to this extent - I think for the second one, I started with the outline without thinking, rather than building out from the middle.