Nicely done Andy.
Evan, most model companies who market their 'own' decal-making materials, such as Testor's, actually sell standard products. Their decal papers, for example, are exactly the same as the type I buy, at a quarter of the price, from a computer-supplies company, even down to the printing on the reverse side!
There's a more than very good chance that the Testor's 'Decal Bonder' is just plain old, but good quality, clear varnish. I recently replaced a spray can of varnish, purchased from my local art shop, and intended for clear coats on oil paintings (which I also use it for) and guess what - this can is from Vallejo, the same stuff sold as a clear coat for models and decals ,but, as it was an 'artist's' product, cheaper than buying as a modelling product!!