I love Critical Role! Awesome show.
Do we know how accurate this map is? I never saw a map in the show. Did Matt ever share his notes/sketches of the world and/or continent via twitter (because i definitely would have missed that, not a twitter user)?
Anyway, i like the overall feel of your map. starraven's brushes are classics. They give a nice fantasy-map feel, imo.
Btw, at Gen Con it was announced that Green Ronin will do official DnD 5e books for Exandria! The first one will be of Tal'Dorei. So i guess we will get an official version of the map soon-ish (they said publication date of the first book will be in spring 2017).