This is actually very simple, I will write it up and if you have questions don't be afraid to ask.
After design of artwork layout etc. plaque was carved on 3/4 maple layed up MDF.
Carved with 60 deg bit stopped depth at 3/16.
Outside profile cut with hand held router with profile bit.
At this point I sealed back and front with vinil sealer by Sherwin Williams to prevent color to enter maple grain.
After sealer dryed I painted carved areas and outside profile with green camo spray paint by Krylon once dry sanded flat surface to remove paint not sanding through sealer.
With air pressure removed all dust and painted finish coat with pre-catalized conversion varnish medium sheen.
Note: due to exposed MDF once sealer gets on in it will develop texture which I do not sand at all. Picture taken on gravel driveway just for presentation.
This one is also simple.
Material MDF core with oak veneer.
I just get to finishing...
After carving and light sanding wiping stain was applied. What that does that stain will get absorbed by exposed core more that veneered face giving enough contrast.
Stain selection was critical to get requested look...
Seal and finish coat with products listed above..
This one was done similar to first example but oak veneer with light coat of sealer so color would also stay in grain.