K-ON step-by-step

This artwork has been on DA for a while and there have been quite a number of people who doubt it isn't me who created it. Therefore, to clear the misunderstanding and prove that I'm not a tracer or art thief, I make this to show the progress of me making

Please click download for biggest view.

-Step 1 : Open Paint Tool SAI, make a rough sketch of the girls on tablet. I haven't had any bgs in mind yet.

-Step 2: Make a new layer named "Line art" on top of the sketch, lower the ocapacity of the sketch layer and ink on the "line art" layer.

-Step 3: Fill the image with base colors. This usually takes me a while cause I'm very picky with colors

-Step 4: Detail the characters by adding some cel-shading, color the eyes and add highlights to the hair.

-Step 5: Start doing bg with vector.

-Step 6: Fill bg with base colors. Add the word "K-ON" to the board by using a customized brush

-Step 7: Detail the bg, I keep adding shadow layers as well as textures to the floor until I'm satisfied

-Step 8: Open the image in Photoshop CS3, adjust a bit of levels, contrast and saturation. Also add some lightning from the top left.

Done and go give Azusa a hug.

I hope this progressing image answers the question whether I'm stealing this image from someone or not once and for all. It's very offensive and yet insulting to me when being claimed to steal my own work.