Buy all the materials and tools needed you can use online shops or just some random shop that has all you need.

Search the image you will use you could use ores like the video or Minecraft block or even heads of Minecraft monsters. Remember you need 6 photos.

Edit the image at Photoshop or Microsoft Paint, cut the image so it is a perfect square and then change the size of the image so it is 170 x 170 pixels and repeat to all 6 photos.

Print the 6 images, to safe time print an extra sheet of paper with the images so if something goes wrong you have spares.

Cut the stickers so there are no white bits surrounding the image and stick the image to the cube then cut in-between each small cube with an X-Acto the bits so you can see clearly the squares.