Thanks @fiveten. Much appreciated. I have some ideas on the stirrups. I'm going to base them on 'standard' stirrups for horses. It should actually be a very simple 3D model to create and print. I'm pretty sure if I print the leather straps as well, which really should just butt up to the saddle edge, they'll be flexible enough to be able to work. I just have to take some 'accurate' measurements so they fit his foot, I'll make the straps longer than necessary so I can cut them to fit... should work. I may even add a step-up stirrup since it would be a real challenge to get on without it.

Very nice progress, Brian @brithebuilder
Having a daughter who loves horseriding, I can assure that besides a simple walk, stirrups are definitely a need. So I'm pretty sure a Sandtrooper on the back of this Dewback carrying a gun needs them as well.
Looking forward to see them printed.

Thanks @johnb, I appreciate it. Yeah, stirrups really do just make sense.

For me, the best part of 3D printing is the ability to create things quickly. I printed a few of the stirrups this morning and they do seem as though they're going to work really well.

3 attached images. Click to enlarge.

Thanks @fiveten. The best part of having the technology available is the ability to make things as needed. I think the stirrups are a definite plus.

@stephen-w-towle - good question. I generally prime small stuff in black and then do a Zenithal highlight in white from the top to establish basic highlight and shadow. These are large enough that that doesn't work as well. The trooper is currently primed Grey but the plan is to spray him with a White rattlecan. I'll then hand paint the details. like the black of the undersuit and the leather pouches. This trooper will also have a Grey pauldron. After everything is base coated I'll hit him with gloss to make his armor look new (brush paint a flat over the non armor parts). Then follow that with a ton of weathering. I usually use Citadel shades like Agrax Earthshade and old conte crayons from when I was in college. They make great weathering powders.

The dewback will like be a very different process. I've already given him a base coat of Citadel, Steel Legion Drab. I'm planning on going over it with thinned down colors like Citadel's Deathguard Green And Deathworld Forest. Maybe some Vallejo Camouflage Green... I want to go a bit light on this stage so when I go back in with the shades to enhance the gaps between scales it doesn't darken him too much. Then there will likely be some dry brushing with some tans and pale greens. After all of that it's painting the leathers. It's always fun to add the little cracks and details in leather.

The scale really matters though. On 35mm minis you have to emphasize the volumes so the viewer can actually see stuff. Something this big, the room lights actually make the shadows for you so they only get minimally enhanced.

2 attached images. Click to enlarge.

The Dewback, I'd look at photo's of Iguana's big ones and cross reference the photos with the movies. I visited the manufactures site that you posted and sculpted figures are top notch. Adam Savage has a Youtube series that focuses on movie props. Often the painting of props is done for the eye of the camera. Props to the naked eye are painted to look a little brighter and garish to help being seen on the movie screen. Depending on their time on the screen. I see a lot of potential as a modeler to improve on the subject. I won't being touch the dial and look forward to your efforts Brian.

@stephen-w-towle - I appreciate the suggestions. I didn't actually think to look at big Iguana's, thanks! I watch a lot of Savage's prop builds, the dude is amazing. I see where your going with the suggestions. I agree, the wookiepedia page describes Dewbacks as being greenish, but that doesn't preclude them from having some natural color variation like an Iguana. I like that. The thing is only on screen for a short time, and as a species native to Tatooine, there's likely to be variety in color patterns. Thanks. I am about paying tribute to what's come before and also trying to improve upon it.

@johnb - Thanks, the stirrups turned out well IMO also. Printers are pretty inexpesive really. It's a somewhat significant time investment to learn 3D software well enough to print things, but it's just time.