I never knew i could do somthing like this, not untill i gave it a try.
Its not hard, you can make even better ones if you master these simple steps..

*Get a thick card board papper, make sure its even a little bit water absubent.(thick)

*Get your colours ready, water colour, poster colour can be used, your brush too shoud be at the corner, big or midium size.

*Now you have to get the brush wet with water, soak it into colour yellow", then you paint the top edge of your card board, it should'nt be too deep, maintain the hue.

*Wash your brush and make red your next choice, now you will have to paint the lower part of your card board, do it as if you wanna allow a circle at the middle of the board.

*Make the two colours meet at the side edge, make some light intersection between the two colours(leaving the middle untouched, a circle)

*Go dry your card for a while.

*Now you have to pick up your black pen, make which ever pattern you wish, but its advised you draw things that are bird and tree related, because its all related to the skies
But make sure you paint the patterns with your dark pen, it enables the black to be outstanding.

*Once you see the result, you can then decide if you'll have to cover up the not too big circle in the middle....

      Mind you,you can also make use of other colours like, white & blue(moon light) that is also nice.

But your pen should be used to paint the patterns. You are good to go.

       If you just finish reading this, then you owe me an upvote.😎