This paper presents a new design and evaluation of customizable ges-ture commands on pen-based devices. Our objective is to help users during the definition of gestures by detecting confusion among gestures. We also help the memorization gestures with the guide of a new type of menu "Customizable Gesture Menus". These menus are associated with an evolving gesture recogni-tion engine that learns incrementally, starting from few data samples. Our re-search focuses on making user and recognition system learn at the same time, hence the term "cross-learning". Three experimentations are presented in details in this paper to support these ideas.