I need to pick this up tomorrow morning (California time). Your microphone is fancier than the one I had and I need to rip through the instructions a bit—best done with Starbucks®.
I will tell you right now I would put a bit more soundproofing in. Fold over a heavy bath towel and lay it on the desk. Put the sound walls and microphone on that.
See what you can do with the top. It should not be open like that. The problem is you can’t put anything hard up there.
You have the tiny, efficient version of my Kitchen Table Sound Studio.
The microphone pattern selector on the left should be in the mid position, Cardioid. You should be speaking into the side grill of the microphone just up from the company name.
As we go
Koz