it is scary to take a spill but just keep practicing and scan for potholes and stuff before- and signal early, look behind you (quick glance) and then stop signaling and then prepare to turn. that is a procedure that works. generally i like to at least signal for left hand turns because people get it- pointing left is easy to understand- but the right hand signal... people just think you are giving some ac/dc metal horns or something and don't understand what the fuck it means anyway- (remember to brake -brake light) although i still do it when the road is clean- sometimes you just need to keep both hands on the handlebars. it totally depends - the ultimate thing to remember is do what will keep you from not crashing. if at first that means not signalling all the time- so be it- but keep practicing and you will get better at it over time.