Tidy work there.

I make sure that the tape is run around the screw holes for the control plate, as the screws them bring the cover and tape into good contact. the more pressure on the contact, the lower resistance that contact joint will be.
Yes, excellent point from Simon. It's how I do my shielding too. Below is a strat I did and the pickguard (not shown) has been shielded on the back so the copper tape at 4 screw holes makes a good solid contact.

Click image for larger version.  Name: ST shielding 950px.jpg  Views: 1047  Size: 185.7 KB  ID: 41526

It's hard to see for sure in your photo, but the solder on the wire in the control cavity looks like it could be flowed a bit better.
Next time you're doing your soldering, just hit it with the hot iron and reflow it just to be sure.