1.1) Start with an Canvas of 800x800 pixels [strg.] + [shift] + [R], background filled white (FFFFFF).
1.2) Add a new layer [strg.] + [shift] + [N] ("Layer 2") on which you'll draw a black (00000) circle. Use the Ellipse-Tool with Draw Filled Shape ( Antianalising Enabeld) and hold [shift] in order to draw a black, perfectly symmetric circle with 400x400 pixels.
I use Windows Xp i notice your key shortcuts i dont have the [strg.] Im assuming its [Ctrl] which doesnt matter at this point, but in 1.1 you say to have background filled white ok on your screenshot I dont see it in the history so do I fill with paintbucket or just leave as is white.
On 1.2 I add layer no problem, my problem is draw a black circle it says to use ellipse-tool with draw filed shape but I cant use both at once and I dont get how to use the draw fill tool it does nothing that i can see.
I can make a ellipse with ellipse tool 400x400 no problem and then fill with black using paintbucket but when i flatten image and invert it goes all white the whole picture the black doesnt invert from inside the circle so I dont know what Im doing wrong Lol cant get past step 1 , help me please I really like your tut and the results just need guidance, thanks.