You do everything with the left mouse button, the game is a menu driven simulation.

You need to build a magical item to the request of the person who visits your shop. You have six days of these visits, with your final grade on the seventh day. How well you do will determine your final grade.

While in the "Make Magical Item" window, you can use the left mouse button to erase color and the middle mouse wheel to scroll though colors.

The game will keep track of your endings on the title screen. Try to get all five! 

Hint for the First Magical Item

Just use all the bright blue blocks to draw your signs.