First, hello. Nice to meet you, in a sense. I want to thank you for your work on the Karin Stover and Karen Hansen pages. My only note would be that in the future, please organize the pages differently. I already chaged the Karen Hansen page to the preferred format, and I'll do the same for Karin Stover, just something to think of next time. And, again, thanks.
A general rule is to put all of the biographical information at the top of an article, appearances/credits after that, and then whatever extra information at the bottom. Also, try to keep things mostly Hey Arnold!-related. Some extra information, especially on cast & crew articles, is appreciated because it provides some background and perspective. The credits should be in a Wikitable, like I used on the Karen Stover page. The template can be copied and pasted, but I can help you with it if need be. If you need any more help, just ask. I should usually be available within two days at most, but these last few days have been hectic. Anyway, thanks again, and happy editing.