I was planning on making a post for my RHG now, and then add the demo later because I'm still working on it. Will I be able to do that? Or must I post it all at once?

You Must post it all at once, else it will be locked

hey what happen ? iam just creating my rhg age 1 or 2 hour ago but where is it?

of course you can believe in yourself and believe ok ^_^