Basically the same method that
@Greg Ferguson posted above. The only difference was I used the Output EQ instead of an EQ block. I don't think it's worth me sharing my actual EQ curve because that is headphone (and other factors) dependant. I used the EQ curve for my DT770 Pros, and then tweaked it until it sounded as close as I could get to my CLRs in my untreated room - so it is very specific to my setup. The EQ Curve from
Greg's post is a very good starting point though!
That said, I am now using Ollo S4X (only for a couple of days) and so far have not felt the need for any EQ adjustments.