What's Up With this Bear Mural?

Well may be Dirthamen (the bear) had a thing going for Ghilan'nain and that is the figure with the white antlers. Or may be Dirthamen is showing anger at Ghilan'nain having encouraged one of his followers to commit treason by taking to the air in the "form of the Divine".

I definitely think the moon and stars are to indicate this is Dirthamen, the god of secrets and knowledge, particularly as the bear seems to be breathing fire. Otherwise I'm out of ideas. Seeing as it appears on the wall of the barn at Skyhold, may be Solas painted it on a previous visit, though what significance it could have for him is anyone's guess, unless he was the follower of Dirthamen that was tricked by Ghilan'nain.

Skyhold has switched hands many times, if I recall. The non-elvhen structures are likely from the times when someone else resided in Skyhold. The keep itself has foundations that seem Ferelden in origin.

My guess is that the wooden buildings--and thus the paintings inside--are much the same. I don't exactly peg the ancient elves to be big fans of wooden structures. The better question is how old that painting is. Because depending on that, it may have some Chasind elements.

Ghilanain is creating one of her cute little puppets a dragon bear.

According to the wiki, this is traditional Ferelden artwork: dragonage.wikia.com