You chose to start your fiscal bill in the House of Representatives.
That is the correct choice.

"The final step in making a bill into a law is presenting
it to the members of the House of Representatives for a vote."

Here are some web sites to help you finalize your written bill and
learn how to present it:
http://www.infoplease.com/ipa/A0101183.html
http://www.wfps.k12.mt.us/teachers/friezet/apgov/Writing%20A%20Bill.htm                Click on BILL TEMPLATE

Conclusion