For a painting: http://www.davidslonim.com/how-to-build-a-shipping-crate/
For 3-d: http://www.instructables.com/id/Need-to-ship-something-safely-How-to-build-a-custo/?ALLSTEPS

For a painting: http://www.davidslonim.com/how-to-build-a-shipping-crate/
For 3-d: http://www.instructables.com/id/Need-to-ship-something-safely-How-to-build-a-custo/?ALLSTEPS