Here are a few sample film budget templates. Remember that your finished budget will need to reflect everything on your cards.
The first template is quite extensive, so your game runner can decide how much of this you'll need to fill out. For my students I require the first page to be filled out with realistic (if imaginary) amounts, and any additional sections required to cover what's on the cards. I then hit some of the key sections throughout the budget and just explain what these are. Alternatively, you can choose a few sections to fill out including researching what kind of information goes in each one. Just be sure to cover your cards! This can get complex so please feel free to ask questions!
The other two templates may be simpler and easier, but won't give as full an idea of the professional process. Any of these can meet the card requirements, though.