The hardest part about Lightning Farron's shield was determining the pattern. I had to look at many pictures to decide how wide/long I needed it to be based on my own height and armspan. Once I got that right, I scaled up a picture of the shield that I found online (because I suck at drawing) and printed it.
I then cut out the paper pattern pieces and traced them onto craft foam. The foam I used was all 2mm thick, except I doubled the layers on the black design for durability – meaning I had to cut four of those out and glue them together. I highly suggest Foamies craft glue for sticking foam pieces together!
Tip: If you want the peak to show up on your shield, be sure to cut the pieces that will lay over the peak in half to keep that effect – otherwise it will look rounded, or possibly even flat.
I coated all foam with 3 layers of hard coat mod-podge (the purple jar) and spray painted. I suggest using glossy spray paints on the pieces before gluing them onto the cardboard base since it will give it a smoother, shiny appearance with no visible brush strokes.
And here's how the shield looks paired together with my sword. One happy couple! <3