It should not show, given your telling if the steps involved. "Should not" are, however, the operative words in question.
Of course, every answer is based on the question asked and requires a more complete context. This answer should not be relied upon to make a legal decision. Seek the advice of an experienced criminal defense attorney before acting. Law Offices of Raymond G. Wigell, Ltd. Defenders of the Constitution since 1975/ Aggressive Creative Defense Strategies/ Website: www.waaltd.com 24/7 --(708) 481-4800.
A sentence of supervision that is successfully completed is not a conviction. Your fingerprint and mug shot should have been destroyed by the arresting police department and Illinois State Police. However, it is possible that a record of your arrest made it to some other database that is not subject to the expungement order (such as a private database, or a Federal or foreign one) , so it is impossible to say whether it will pop up somewhere down the road.
Both good answers by counsel posted. I would only add, that there are human errors sometimes in the expungement process and some items still apear even though expunged. Hire a criminal defense attorney to run your criminal record to see what shows up.
I am trying to give you a general answer to your question. We do not have an attorney-client relationship by this response on the avvo website. I have not been retained to represent you. I am licensed to practice law in Kentucky and in federal court in this state and the Southern District of Indiana. You need to seek legal advice from an attorney licensed to practice in your area..