It's fairly self-explanatory. click on the colors to change the icon background, and click on the graphics to change the graphic. click on the black and white to change the color of the graphic.
the font I used in the thumbnail is called coming soon. Other icon makers: https://scratch.mit.edu/projects/387137733/ https://scratch.mit.edu/projects/386805135/ check out my animation contest: https://scratch.mit.edu/studios/26605360/