Usually my pictures start from ideas from sketches I do, usually I have a sketchbook where I just start sketching ideas and where I learn and practice to sketch things.
I usually end up with a messy sketch to begin with. Then I neaten it up with an eraser or by re-drawing the image.
I’m also trying to make it so my images are colorable for others, so I outline the image in black ink and erase the pencil.
I then scan it, print, then get another piece of paper to trace the image lightly with pencil for the original.
Right now I’m using Prismacolor pencils for color artwork.