Add days to date

I am working a spreadsheet that adds 60 days in column "I". The formula is looking into column "H" and adding 60 days easy enough. But if
"H" is blank i desire I to be blank as well. I attempted and ISBLANK formula but could not get it to work. I am new to creating and working with tables and unsure if that my misunderstanding on using ISBLANK.

Thanks in advance

BillyrJ

I butchered it pretty bad and I made it a little complicated than I should Thank you for the assist. I will keep working on my syntax when working with tables.

Thanks again