Problem with PCB making

I have followed a process to make a PCB, whose link is given below. I have followed the every process as mentioned with correct proportion of chemicals. But, unfortunately, this didn't work (traces were not stick to the copper board). I have used glossy paper in this experiment. What could be the possible reason of my failure Or this process is a invalid process ?

• You can have professionally made PCB for probably less than the cost of your supplies and chemicals though. jlcpcb.com 2$for 2 layer pcb. – Damien Mar 5 at 11:29 • @Damien: Maybe, maybe not. A typical double sided board runs me about 40€ if I have it made as a prototype board with no solder mask or silkscreen layers and I can wait a week for it. I can make a single sided board at home for far less, and have it done in a few hours. I usually have a board made because I'd rather spend that Saturday afternoon doing more interesting things than etching boards. But, if I find I need a small circuit while fiddling around, I might make it so that I can get on with an experiment rather than waiting a week. – JRE Mar 5 at 11:38 • @JRE You can get double side board for a few$ delivered in 2-3 days. Not sure it worth the time and money without talking to deal with dangerous chemicals. How do you do via in your homemade boards? – Damien Mar 5 at 11:43