I am very glad that you enjoy your meditation practice. The more skilled you become, the more benefits you will get out of meditation.
Our Chan Handbook provides the basic Chan techniques that I learned primarily from my late teacher, Great Master Xuan Hua, who is a Patriarch of the Gui Yang lineage.
You could also learn from the late Great Master Sheng Yi who is also a Gui Yang Patriarch. His disciples are good meditation practitioners who are not after fame and profit.
You could look them up as follows:
寶林禪寺 大嶼山東涌地塘仔 2988 1532
Peace and bliss in the Dharma.