I have tried out every game you have and I can see small incremental improvements in each new game. As for this game, it incorporates the mechanics of your previous tic tac go games with some of the elements like a shop into this game. Keep up the good work, you are getting better and better.
One thing about this game, though is that I think the gift box might be bugged. Before I played, I just hit the gift box a bunch until I had enough coins to immediately buy all of the items without playing a single game.
As an overall suggestion I'd say abandon the tic-tac-go games. The game itself is very limited in how fun it is. I liked where you were going with the racing and bubble pop games, though. Those had a little bit more fun value to them.
Anyway, if you keep incorporating new concepts and getting better like you are I bet you will make some awesome flash games. Keep it up!