L16pilot,
Didn't see your inst panel pic so I don't know if this is too late. I don't recall where I got this pic but I'm using it for my current build, a KI-61 Tony, panel and will use it for the Zero when I get to it as well. I know it's not correct for the KI-61 but it's the best I have for a Japanese panel.

My method is to print several copies of it resized appropriately, paste one complete copy to a piece of .020 polystyrene, then cut out several disks of the same type .020 sheet and paste cut outs of the dials to them and paste those new dial disks over the same inst dials on the panel to add raised relief/depth, I'll do the lower individual parts as seperate pieces and the top center and middle insets will be cut outs in the main panel piece with a layer behind the main panel to give the inset relief/depth. Asewing needle or stick pin can be used to put just a tiny drop of epoxy over the screw heads and when it's dry the pic wil show through the clear bump to simulate the screw heads.

I saw this done in a plane at the field and the effect was quite good so I had to try it myself. I use the super High def printers at the local copier shop (Kinko's) to get really nice color prints on a dense, smooth paper stock. Not quite photo paper, but close so it's not too glossy. Did one for an ESM FW-190 for a buddy and it looks pretty cool in his plane...Anxious to do mine soon...not quite ready for it yet though.

Below is the panel for the use of anyone who want to try it out as well.

Such great work by eveyone here. I'm really enjoying getting back into following this thread.