Retirement tax questions

I missed my 2018 RMD and I took it in January of 2019. I composed a letter requesting a waiver for the penalty. I was going to file a 5329 for 2019 with a copy of the RMD request form. I was going to put "FC" on line 54 of the 5329 and mail it in with my return. My wife and I are filing standard deduction and we are wondering if this is the proper way to proceed. 

Thanks for any help

Jim