I decided to polish and increase my animating skills in next month so I started from begining with Richard Willams's "Animator's Survival Kit" book. For now I did bouncing animation with horizontal movement as a next animation model I am planning to bounce a ball in a much more complex environment after that I am planning to do something more complex :). In addition I am following Pierrick's Alive animation course for now everything goes really well I hope it will continue like this :)