Translation:Don't drop that glass of wine onto my white sofa!
How to make the distinction between "wine glass" (the glass you use to drink wine) and a "glass filled with wine"?
A wine glass is vinoglaso or glaso de vino. A glass of wine is glaso da vino.
Why is it "mian blankan sofon" and not "mia blanka sofo'. This doesn't look like a direct object to me and it follows a preposition.