I don't see any problem with including pieces made in other applications than Poser. Just bear in mind that the majority of the user experience here is with Poser - so we may not be able to make suggestions for how to accomplish something in, say, Vue. 

If the group proves good and active then I would hope to roll it out to the whole community going forward. (Although I can see pros and cons on both sides. If I'm trying to achieve realism within Poser, then I'm going to get my most useful comments from people also working in that app. But, any member can comment on things like colour, composition and lighting - and a fresh pair of eyes can be good if they are totally objective and don't know Mike from Dork!)

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"you are terrifying
and strange and beautiful
something not everyone knows how to love." - Warsan Shire