Lucky that I have already an Inkjet printer. I tried making my own decals for the 1st time and it works beautifully. I bought 12 sheets of 8 1/2 x 11 clear decal paper from a company in China on Ebay for $11.00 USD. High quality suff . Funny how the order from China arrived in 5 days and it takes longer to receive an order from 1 state away.
TIP ; if your decals have any white color in them, you have to use white decal paper. I printed an American flag decal on clear paper and the white stripes came out clear.
For a fixative coating, I used what I had on hand. Future works good and so does Model Master Semi-gloss. I mist sprayed the Future with my airbrush on 1 set of decals , and brushed on the Model Master on another, and achieved the same results. I also "fixed" some old cracked decals and was able to use them ( with dificulty ) with the brushed on Model Master coating.
I am attempting to grab nose art from the internet for my 1/72 model aircraft and resizing the photos with a free photo shop program called Photo Scape, wich I found online, but I'm still learning how to use it. I previously used Piccassa wich is useless for making decals just so you know.