1. When using pictures generated from ink jet printers, you should wait for the ink to dry completely and then you must first test that the color does not bleed when you apply glue on it because glue has moisture that may spoil the ink of this printer.
2. In case your color bleeds with prints from ink jet printer, just try using a low moisture glue. And if the problem still persists you will have to use the laser copies of your image. Use a pen or marker to sharpen the outlines of your decoupage image.
3. Angle More help your scissor or craft knife when cutting the image. This would ensure that the back side of the image is not visible on your finished object. Carefully cut your image so that you do not miss out on any background or neighboring image.
4. On most of your decoupage projects, you would be pasting your pictures on the top but with clear glass object you would glue it on the non-used side. Consider for example doing a transparent glass plate. To do such an object keep your object (like plate in this case) bottom up and do your pasting work with image front not facing you but such a way that its shows up when the plate is kept right. This will ensure that the lacquer layer does not spoil the glass finish.
5. Leave your object to dry completely. And then layer it using lacquer. Before proceeding to apply another coat, wait for the first one to get dry. Once it's completely dry, apply another coat. Mod Podge is the most popular decoupage