Welcome to expertvillage.com. I am Angela Sage Larsen. I hope you will visit my website at petalwinkthefairy.com. One of the final steps for painting your glassware is to bake it. There are many paints that by baking it, it makes it more permanent on your piece, you are going to want to check the directions on the back of the paint, but always no matter what the directions, put your glass in a cold oven, it is important that the temperature inside the oven and the temperature of the glass always stay the same and that way your glass will never crack. Once you put it in the cold oven, just a regular kitchen oven, and you want to make sure that it is fairly well ventilated, you might want to open a window or turn on a fan, once it is in the cold oven then you will turn on the temperature. Now this particular brand likes it at 325 for about half an hour, so I am going to set it at the temperature and then set the timer and I will come back in half an hour. Now that your piece has been in the oven for the specified amount of time, you are going to want to let your piece cool because remember you always want the glass the same temperature as the air so that it does crack. And thinking about that, notice how the glass is not near the elements inside the oven. You do not want it too close to the upper elements or to the lower elements, now the piece is in room temperature and I can take it out and now it is just a little bit more permanent, now that it has been baked.