I'd like to try my hand at sculpting miniatures! Suggestions?

I've worked with Sculpey, other modelling materials, and 3d modeling for many years. In looking for what green stuff is, I found this link that I think is pretty solid for your interest: http://ironmammoth.blogspot.com/2011/09/figure-sculpting-epoxy-putties.html

His process matches how I think of any art: Move Out, then Move In.

Meaning you do skeleton and layout work first and commit to your design direction, then you add generalized form, and finally make your detail. It may be useful to work with Sculpey or something more time forgiving to develop your sense of technique.

Thanks to your question, I'm going to add green stuff to my raw material collection for makin stuff. Though I doubt I'd do miniatures, maybe twenty years ago my eyes might've been more forgiving than now.

Based on other sculpting I do, like Sculpey, I make a strong skeleton before I add any bulk. In Sculpey or clay that is usually with aluminum wire or aluminum foil. It sounds like that approach might help you, but with the green stuff you can make a strong skeleton without any other material by letting it cure before you add bulk. You should be able to play with the yellow blue mix to get one that lets the base cure quicker.

Wasn't sure how far you were with it. Again I haven't used that Epoxy mix nor followed the videos. In my mind, at that scale, I'd think the wire would make it more awkward. I know other two part Epoxies like jb weld and plumber putty are pretty solid and reach a state where they are firm but pliable.

I picture rolling it out into like a 1.5 to 2mm snake and forming the skeleton when it hits that holds its form state. Then once that set adding a thin layer to create the bluk and musculature shape. Then I'd get the torso on in bulk, then the arms like the legs. Finally I'd add a thin layer to work the details in a section at a time. Again all in my head for the miniatures. My process may be tainted by too much time with Sculpey as the bulk white Sculpey is much cheaper than the colors and I use the colors rather than painting.

serious miniature sculpting isnt a hobby many people take up. the craft requires a large investment on time and effort, both for its difficulty and danger.

the video link from Mcteddy is pretty much everything you need to know for miniature sclupting, if you watch through all the parts.

sometimes people would rather customise a miniature than make one from scratch. for this a stockpile of plastic kits is very helpful. the selected kits are bashed up, with the parts you want reconstructed with epoxy clay/putty into your desired miniature. miniature customisation is less demanding compared to making a miniature from scratch due to most details already in place from the kit, although it has its own host of problems like cutting, and the danger there is getting cut.

That's how I see it. Leaving head for last, because I think the head position and expression really bring something alive. Probably bring in a gun as you do the arms, because otherwise you might have cut stuff away to make it fit. Ymmv