drawing experiment

To start illustrating, I was concerning how to make
the atomosphere of Japan into my illustration.
When I draw Mt.Fuji without gradation, it looked
really plain and flat furthermore it did not look
Hokusai Manga style illustration or Japanese style
illustration even though I picked the colour from
Japanese traditional colours.
What I found when I look at some paintings of
Hokusai and Japanese woodblock printing, I
realised that they used some gradations. So I add
some gradation into my Mt.Fuji illustration then it
does not look plain anymore and the gradation
creates the atmosphere of three dementional as
well as Japanese atomosphere.