simulated from a photograph

Looks good - what does "simulated" mean? Do you take the image as a backdrop and then embellish it, or do you copy it? Or something else alltogether?

simulation means that i has a photograph and i imported it in inkscape that traced it manually ,
i've got this 'simulation' definition from Arabic forums ... they useit a lot

you've done a great job on the colouring.

Back in Windows 3.1 days (when I was in my early teens) I drew a pixel perfect Lamborghini Diablo in Paintbrush. Today it would have been classified as pixel-art. I so wish I still had that image

oh go you are very old man ,
well i want to do some pixel art but i don't have an idea to implement right now , i hope u post some of your pixel art

It's generally called rotoscoping, btw.