This is my first Instructable, so suggestions and CONSTRUCTIVE criticism is appreciated.
Step 1: Materials and Stuff
Cardboard sized about: 20 3/4 In. X 21 1/4 In.
A pair of scissors or an x-acto knife or something sharp and precise.
Two paintbrushes. I got a thick and thin bristled brushes.
A cup of water.
A soft cloth or wash cloth.
And the hardest to find, acrylic paint. It needs to be acrylic, because the lady at the art shop said it showed up the best on cardboard.
The colors I used were:
Carmine (dark red)
Primary Yellow (yellow)
Neutral Grey (grey)
Titanium White (white)
Phthalo Blue (dark blue)
Step 2: Sketching the Design
I believe I made the Twilight Princess version of the shield, but don't quote me on that.
So, to sketch it, take your pencil and sketch the design as best you can. Don't worry too much about making wrong lines because it'll be covered in paint soon enough.
Step 3: Painting-Part 1
Don't get your panties in a wad if you accidentally get some of the paint in the other parts of the shield, because it'll be painted over soon anyway.
Step 4: Painting-Part 2
Step 5: Painting-Part 3
Step 6: Painting-Part 4
Step 7: Cutting and Optional Stuff
You may have noticed an empty spot at the top of the shield. In the picture I based this off of, there was something there, but I found it was way too much work to put it on there, so I just covered it in grey. You're welcome to put your own design or whatever in there.
Also, if you used a box or cardboard with creases in it, you may have struggled with the cardboard bending. To fix this I just took some of the extra cardboard I cut off and glued it to the back where the creases were. You can also make a strap with that excess cardboard to hold it up.