3D by Illustrator ...

an endless hole with some red ribbons at the beginning...

In my mind, red and black are always the scariest colors; the black create the feeling of "unknown","invisible","empty" and even "horribly lonely", the red is something so strong, a bit horrible as blood. The compination of these two does make me real afraid and in me, there are feelings of unpredictable, very terrible, very cruel.

Ok! Enough for the idea, about how to do this, to make it look like 3D image, besides the gradient color designing shadow and light, i have also drawn some red ribbons by brush with different sizes arranged at different position to create the look of perspective. That's all.