Denver Live Drawing Circle Xcentricity Gallery hosts a monthly drop-in life drawing sessions featuring a nude model in short and long poses, for artists in the Denver metro area.     We meet every 2nd and 4th Wends of the month from 7pm-9pm. (Exception: Nov. and Dec. meet only on 2nd Wends.)   Please bring your own sketchbook, non-toxic drawing materials, $10 + optional tip for the model. Chairs, tables and sketch boards available. Bring an easel if you'd like to use one.   Several times a …