How to make your own large painting

"Two girls eating ramen" Acrylic on canvas 36" x 48" © 2016 by Richard M. Dominguez
I got the idea for this painting from a pin on my Pinterest account. I created a board called "Things to try to draw or paint" and I'll pin stuff in there that I like or find amusing. Sometimes I'll shamelessly copy something, but always for my own enjoyment. I never copy someone else's creation and sell it or pass it off as my own (even if I was honest and sold it as a copy). But I do often use other artist's drawings and paintings as inspiration for my own. In this case, I had pinned Picasso's "Le dejeuner" for my muse.