To create a new design, open the app and select 'New Project'. Choose your design type, then start customizing with various tools and materials available.

Yes, you can save your progress anytime by tapping the 'Save' button on the top right corner of the screen. You can also name your project for easy identification.

Yes, the undo function is available. Just tap the 'Undo' button located on the bottom left corner of the screen to revert your last action.

To adjust the size of objects, select the object first, then use the resize tool (usually represented by a double-headed arrow). Drag the handles to increase or decrease the size.