Hi Josie.

I can tell you how it works for me (which is all anyone can do).

I do the initial mixing with headphones (ATH-M40fs - I think you may have the same ones - great mixing phones).

When I am satisfied with that, I listen through my monitors (Yorkville Y1). That will often show that a few things need to be slightly brighter (acoustic guitars, for example). So I remix to the monitors.

Then, going back to the phones ALWAYS shows that the new mix is slightly better (in the phones).

That works for me.