You need to add a duration(in milliseconds) to your tween, otherwise it would default to 0, this will cause the "jump", e.g.: 500
for half a second
instead of: .to({x:..., y:...})
use: .to({x:..., y:...},500)
And a second thing: You don't NEED to call createjs.Tween.tick(1);
this is usually called automatically by the Tween-class.
Here is some help and some small examples: http://www.createjs.com/Docs/TweenJS/classes/Tween.html
Advanced Examples: https://github.com/CreateJS/TweenJS/tree/master/examples