For the bubbles, pop the bubbles gently with a pin. Smooth out that particular portion using tweezers. Mostly, diamond painting canvases are not horribly wrinkled. But if so is the case, use a flat-surfaced tool, like a diamond painting scale. Turn the canvas over, so the blank/unprinted side shows up, and run over the scale on it too smoothen out the wrinkles. Another trick is to cover the canvas with a towel and gently iron it with the iron at a lower heat level. Cool the canvas down under a fan (it will not take long) and place it under some heavy books for a day to get a flat canvas. However, this can be risky as the adhesive on the canvas may get stuck to the iron and cause you more harm than good. Extreme caution is recommended.
Diamond painting, like all other craft projects, requires concentration and precision, but most of all, it requires practice. Once you complete the smaller and easier canvases, you can move on to larger and complex pieces of art which will become an easy feat for you to complete as you go on. In order to perfect the art of diamond painting, you can also use certain tips and tricks that can help you eliminate the mishaps that may occur during the process. We have compiled a list of helpful tips for you, which can easily be accessed here!