iron out the wrinkles (of/in something)
1. Literally, to remove wrinkles from something, especially a piece of fabric, using a flatiron. Your new dress shirt is all rumpled! You'll need to iron out the wrinkles before you go to the ceremony this evening. I have to iron out the wrinkles in this tablecloth before our guests arrive.
2. By extension, to ease, solve, or remove minor difficulties, troubles, or problematic details (of or in something). (Sometimes worded as "some wrinkles," "a few wrinkles," etc.) Our latest software update is nearly finished—we just need to iron out a few wrinkles before it's ready for release. Your friends and family are great means of support when you need to iron out the wrinkles of your life. Bob and Janet are seeing a counselor to try and iron out the wrinkles in their marriage.