Haha, looking back now, I see that this was the very first creation I ever commented on! I've been on here for over a year now. A few days after I signed up on MOCpages, I saw THIS on the homepage, and commented on it. Thanks for bringing me to the pages!
This is another good diorama that you've built on here, AC Pin. By the way, I told a son of a co-worker of mine about MOC Pages and about your work but I'm not sure that he's seen your work yet. If he did (and by the way, he is a big LEGO fan and a big LEGO Star Wars fan), then he'd be most impressed with your work.
Very cool build, man! I love the scale detail on the head. One thing that helped my own Rancor stand was making the tail long enough and sturdy enough to hold up the fig. You might try lengthening the tail a bit and making it sturdier so your Rancor can stand on it's own. Also, in this scene Luke doesn't yet have his cybernetic hand covered with a glove. That doesn't happen till the scene on Jabba's sail barge.