you dont need any twitching really the w key +space makes you jump roll holding right mouse button should enable u to steer a bit the rest is just timing if tht doesnt help then i suggest get as far as you can make a platform then save till u complete it also on some platforms if you aim to hit the wall this will stop you from over shooting ,If its the ones that fall when you land just keep the w key pressed while tapping space bar it should go as one fluid motion
hope this helps
