The crucial information is available directly in RealWorld Cursor Editor:
this program is broken and confusing af 0/10
how bigger the circle?
how do i set mouse pointer as my current mouse pointer
How do you download the softwear to get the cursors
how do i make the canvas bigger?
how do I install cursors and run them?
how do i make the cursors bigger where the image is bigger when i use it??
How could I publish my cursors