-To open the menu just click on the grey bar on the left -In the PAINT mode you can paint dots bye pressing the mousebutton and moving your mouse -In the EDIT mode you can move the painted dots around I think its pretty selfexplaining but if you have questions anyway just ask me in the comments :)
Do you know any things I could add or improve please let me know :D It would be really nice if you could leave a comment/like/favourite Have fun ^^