Keep your arm as close as possible without limiting your movement that way you can make easier quick circles. It took me a while to do that bloody part. That is if you've not already done it.
Oh my god finally beat it, thank you Fayt @_@ derpgot the Water Lily brush stroke now. And sorry Reptar >:C
If I was religious I would totally be a missionary when I grow up, I enjoy spreading Okaminism to people. :'D But yeah if you get stuck in the future ask me, since I've played it a billion times and we're at about the same part. xD