First, you have to start with a piece of cardboard. This is the one part that really doesn't change much.
It doesn't have to look very nice either.

Next, you're going to need some material to put on this, I have a bucket of it, so I just pulled out some pieces and laid them together.

Once I got them all laid out and decided upon, I cut them a little bigger than the area they were going to cover. I pretty much just stapled around them (You have to press hard to get them to go all of the way through.)

I got a larger piece of material to go on the back, so I pulled out this red material and did pretty much the same thing as the front, except I didn't have to worry about going around each piece, just one.

Lastly, you have to gather inspiration onto your board.
Since this is for my friend, and she loves kittens, I made sure to get a couple of those in there.
If you're going to ask about Hitler, just remember that he is by far the most inspirational speaker I've heard (even though I couldn't understand it), and, also, he was a beautiful artist (hence the picture of the flowers in a vase).