If you’re struggling with the wine part, you need to align the bottle with the glass and make sure that the wine is being poured into the glass. It’ll be a little bit awkward sometimes depending on whether you’re using a laptop keyboard or a computer mouse considering it requires you to pick up the bottle with one button, hold the other to rotate and then rotate it at just the right angle (though it can feel a bit awkward depending on the angle).
After that, all you have to do is refrain from signing the parchment that Cruxia shows in her hands until she disappears.