Found this great photo of a rather handsome chimp fellow and used it as a reference for this little card-size portrait. :D
https://spidermilkshake.deviantart.com/art/Chimp-12-206276115
by SBG-CrewStock, who has many many wonderful stock photos! ^u^ Thanks so much for being such a great provider of resources!

:) This aceo is just the facial area--done in watercolor and ballpoint pen on a rough watercolor paper. :la: Rather happy with how he turned out!