I'm not sure this are right thread to Ask this but I'm going to give it a try anyway.
I'm playing Pokemon trading Card game on my Nintendo 3DS, I have download it from nintendo store and my question are. How can I make my own deck using deck mashine?
I have squirtle and friends deck now but I want to make another deck, so I can beat rock club.
So I am not sure what you are asking.
If you want to build your own deck, you can do so, easily by going to your decks and modifying a new one.
In order to use the deck machines, you have to beat gyms and insert the medals you get into the machines. After doing that you select the pre-constructed decks you want/
The decks you are able to build will be denoted with a * sign. The decks that have a number next to them indicate the number of cards needed/remaining to build this deck. You can select the decks to determine the remaining cards needed and what goes in the deck itself.