I wrote this when I was 12, is it good? It's just a random excerpt, I wrote it when I was mad.?

Hrm, interesting indeed, but confusing. I guess if you clear up some of the confusion (and only some) quickly, it sounds pretty good. It's a bit disturbing to think of a 12 year-old writing this though! It's good, but I can see some places it could be improved as well. I know you didn't ask for constructive criticism so I'll keep is short, but I would recommend updating and enriching some of the adjectives. It could be made more much more vivid and powerful if you were to say, describe the "mive oven" in more detail. Also, I would add quotation marks to the dialogue to make it easier to read and edit for consistent tenses, as Cie suggested. Great imagination for your age though! Definite potential.