Not quite related to CGI or special effects, but as I've been exploring the filmmaking process between creating ABYDOS and doing pre-production for the sequel, I think it'd be good to share what I've learned from it, both in terms of crimes against filmmaking mistakes I've made and things I've happened to learn along the way.  Best to keep in mind that I'm far from a professional, so these suggestions are more from my experience as a no-budget science-fiction pseudo-horror indie-film writer than a professional screenwriter/director, but if you're in such a position as well, perhaps some of these may prove useful to you.  Without further ado, here we go: Keep the script open to your cast     This suggestion is probably obvious to many, but it was one of the things I'd seriously messed up on while filming ABYDOS.  I'd kept the script fairly closed and would only reveal brief portions of the script at a time, thinking the relative lack of knowl