Wording: "Set Filename" instead of just "Filename"
This is a suggestion :)
Almost everywhere we're using a verb and a noun (Add Asset), sometimes also only the verb (Add) as a call to action or as a page header, but when uploading the asset, in the "progress bar" that you have in the modal, it says "Upload Asset" as a first step and the "Filename" as a second step. I think it would be more specific and more coherent/unified if we used a verb and a noun everywhere... or where possible.
Here instead of "Filename" it could say "Set Filename" or something like that would make more sense to me.