REDMASK'S PROFILE

I've been working on an African fantasy adventure game on rpg maker xp for years and I'm hoping to finish it soon. I've never uploaded a game before so I have no idea how to do it. The game is roughly 180 MB, hope that's okay I believe I've seen larger games on this site. Also, can I submit stuff like screen shots before uploading the actual game and is that a good idea?