Hello! This is our simple canvas! By the way the undo (Or ctrl-z) button and the Redo (Ctrl-y) works, just spam it for a bit or hold onto the shortcuts. It takes very small bites out of your artwork or gives back very small bites at a time. I do not know how it works on mobile, or even if it works on touchscreen.

Undo - 'Ctrl' button and 'z'button pressed at the same time.

Redo - 'Ctrl' button and 'y' button pressed at the same time.

Mass Redo/Undo - Same instruction as above but hold instead of pressing shortly.

Brush/Eraser - Click the 'Brush' button for the brush. Click the "Eraser" button for the eraser.

Saving as file - Click the 'Save' button to save your artwork. The file format would be a png. If you prefer, you can also screenshot it.

Changing color - Click on the box next to 'Color:' which is defaultly black and drag over the color slider to your respective color.

Changing sizes - Just drag the slider for 'Brush size' or 'Eraser size' up or down.

Brush stability - Same as changing sides but with the 'Brush stability' slider.

Clearing everything - Reload (Or ctrl-r).

Opacity - Drag the slider for "brush opacity up or down. This effects the eraser too.

Add layer - Click the "Add Layer" button.

Select layers - Pick the dropdown (button with arrow down) to select a layer.

Remove layer - Select layer in dropdown (button with arrow down) and click "Remove Layer" button.

Using layers - The layers use reverse sociology. For example, Layer 1 goes under Layer 2.