Yup, here is one of it, and also a few of my B. atlas cedar. My cedar (first 4 shots) is very full, and has good close foliage, but as you can see the graft is a problem. Good that your's isn't grafted.
Last one is of the blue spruce, I wired it for the first time last fall.
From what I can see in the first shot of your tree, if it is a graft, it's well done. There does seem to be a difference in bark on the trunk below the first branch, but it could be the way the light hits the trunk.
Yeah, it's a nicely done one. The only problem it looks like you might have is if the stock grows faster than the graft. That's part of the trouble with mine, is the size jump between the two. I keep hoping to find a solution to this, other than pulling a branch to disguise it.
The biggest tip I can give you is to get the timing of repot correct. If you do it too late, it'll blow off a lot of needles. Luckily, they'll generate a whole new batch in most cases.