In the state of Washington, if I get convicted for credit card thieft, what would my punishment be? Normally?

While this type of question would ordinarily seem to be a simple inquiry, there are too many variables that come into play in any case to determine what a sentence will be, based upon the few facts you list. In addition to the ones you list, the total value of the loss, and to a lesser extent the number of times you committed the act of using the card fraudulently would establish the gradation of the offense. The gradation of the charges (and the sentence imposed) depend on these factors. In addition, the litany of aggravating and mitigating factors that can affect the sentence is not short. Consult with a lawyer admitted to practice in your State, explain to him the detailed facts of the case and the actions of the person charged under the protection of the attorney-client privilege. After you do this, the lawyer can then review with you all of the case facts in light of the aggravating and mitigating factors, and be in a position to properly estimate the sentence. Good luck.

DISCLAIMER
This answer does not, nor is it intended to, create an attorney-client relationship; or, constitute either legal advice or attorney advertising. Rather, given the nature of this forum, it is offered solely for information purposes, as a starting point for you to use when speaking directly to a lawyer in your State. Do not assume that the legal conclusions I mention that pertain to NJ are applicable in your State. Since the facts of each case are different, it is critical for you to consult with qualified counsel with whom information can be shared and assessed under an attorney-client privilege, so that competent advice can be obtained on which you can make informed decisions. Contact an experienced criminal defense lawyer admitted to practice in your State before making any decisions about your case.