Aubergine Sky is entirely mouse controlled, and after the intro screen you don't need to click at all. Just read the text, move the mouse, experiment.
If that's not enough, here are some level specific hints that might help, highlight them to read.
1-City : push all the dark clouds away.
2-Uphill : gather all the white clouds together.
3-Forest : startle all four hidden animals.
4-Downhill : navigate the maze from left to right.
5-Night : paint the sky with stars.