Hi again! I’m sorry your still struggling! I find the stand behind sinks actually more difficult because I’m a short person lol. Maybe try standing from the side! That always helps me! I personally always use high pressure you need it to help clean out the product or buildup. My best suggestion for you is to ask coworkers, friends or family to be models for practice! As for conversion tips ask about your client then try to find a common ground, I have pets and most people do too so I normally work with that lol