To promote Pokémon Brilliant Diamond and Shining Pearl, the official Pokémon website has created downloadable Dialga and Palkia Papercraft Models which people and print out and glue together.

Download and Build Dialga and Palkia Papercraft Models

To celebrate the release of Pokémon Brilliant Diamond and Pokémon Shining Pearl, have fun assembling this charming craft.

To commemorate the release of Pokémon Brilliant Diamond and Pokémon Shining Pearl, you can show off your crafty side by assembling a pair of 3D papercraft models of the games' mighty Legendary Pokémon, Dialga and Palkia.

Simply download and print out these highly detailed models, then get crafting! It's a fun activity, and when you're done, you'll have some awesome figures to display next to your game! Add a bit of folded flair to your Pokémon collection, then dive back into you Sinnoh adventure in Pokémon Brilliant Diamond and Pokémon Shining Pearl.

Official Links:

Dialga Papercraft Download: Click Here
Dialga Instructions: Click Here
Palkia Papercraft Download: Click Here
Palkia Instructions: Click Here

Backup Links:

Dialga Papercraft Download: Click Here
Dialga Instructions: Click Here
Palkia Papercraft Download: Click Here
Palkia Instructions: Click Here

Source: https://www.pokemon.com/uk/pokemon-news/download-and-build-dialga-and-palkia-papercraft-models/