Well, first of all: communication. I like to talk to my writing partners, whether it's about our play or other stuff, if that's not something you want, that's certainly no problem but if you write me, I'll answer you.
Writing length: Depends very much, mostly on my partner and the input I get but also on the day, there may be days and times where I manage to write 5 paragraphs from nearly nothing and there will be times where I struggle to write as much as you wrote (or even less) and if that's the case and I don't feel like it's good enough I might delay the post a few days until my writing flow is hopefully back.
Writing frequency: I can't and won't promise anything. Most of the time you should be able to expect two or more posts a week, nearly always at least one a week but there can and will be weeks where I'm either to stressed out to write anything good (I'll probably still try anyway as long as it's possible) or I'm just on vacation without any intention to be on the internet. That said, there will be also times where I can post daily or even a few times a day if I have something to answer to.
I'm understanding: If you have a problem and can't be in e fore some time or you're not happy with our story, characters or whatever, just tell my, I'll be able to understand it and it won't be an issue, even if it means a premature and of our story and I'll do the same. What would be even better is the possibility of working out the problems, changing something here and there, nothing's written in Stone.
I'll be happy to research something if you want to write as authentic as possible and if I get something wrong or unrealistic, point it out and I'll try to rewrite the affected part.
And last, I usually don't work with pictures. I like them, I like it if you bring them into the story, I'll maybe bring one myself if I can't find one and you want that, but I'm just not good and finding any I'm happy with myself.