Just as an FYI for future use, you can use a product made by Liquitex for use with acrylic paints called acrylic Gloss Medium. Here is some info:
http://www.liquitex.com/glossmediumvarnish/
Amazon carries it, but you can find it at just about any place that carries acrylic paints--Dick Blick or even Michael's.
I have used it (and artist friends have as well) for acrylic painting and you can also use it as the glue. You can apply some to most surfaces and then lay paper or other attachments (but not too heavy) to adhere to the surface and then cover with more to form a gloss finish (and it also comes in a matte medium finish). It works better to apply in thin layers, letting dry between coats. You can add more paper to top in layers if desired so it would work to patch those places missed. It will not work on an oil-based paint surface.
It's used as an extender in acrylic paint and as a glossy finish. The more you add to paint, the more translucent the paint becomes. You can also find it with texture added, including tiny beads and a lava inclusion that creates a nice texture in any color. It works well and isn't sticky when dried. If applied directly from bottle it will look cloudy initially but dries clear.