No worries. Yeah, I'm a Japanologist. My personal statement is actually on TSR in the personal statement wiki, if you want to have a look at it. I'd be more than happy to take a look at yours if you want. There is a PS section on TSR though, which might be of more help.
I applied to Hertford, but I actually got into a different college. You'll have two interviews (two chances to prove yourself), one at the college and one at the OI. The college one will be a bit more general (why do you want to study Japanese? what interests about Japan? and I got a random question on current events, so read the newspaper - that's not even interview advice, just read the paper!
). You'll also have a pretty basic language analysis test. My one was deconstructing/reconstructing/translating a made up language. Pretty easy to be honest. In my interview at the OI we got into the nitty gritty of my personal statement and I got grilled on literature by the literature fellow. So SERIOUSLY do not put anything in your PS that you can't back up. And then more general questions about my interests in Japan (health care...何何何)
Yeah, we did analysis at uni. It's all pretty much self analysed though. So the more practice you get the better!
That being said, I couldn't analyse anything before I got here. Just read as much as possible. Literally read everything you can. Find what interests you, and have an opinion. You aren't expected to know exactly how (if at all) Soseki was influenced by Genbun Itchi. You haven't studied anything like this before (probably). But you are expected to have independent analytical ability. Think about what you read. Have your own opinions about it. If you do any independent reading at all, this is pretty standard. High level analysis is NOT expected at interview. In language or in cultural business. It wouldn't be fair of them to assume knowledge.
I can send you essays and stuff if you want. But to be honest, its all so specific, it might be a waste of time.
Let me know if you do want anything though. Good luck!