@foone it worked pretty well, i used to do this a lot. I usually xeroxed the layouts (to not cut into my precious magazine, or since they printed on both sides) and sprayed the paper with some orange-smelling oil to make it more transparent AND stick to the PCB's photosensitive layer. Exposed with a 300W Osram Vitralux for 4 minutes. Develop in NaOH, etch in FeCl3.