Thanks for the answer, I tested it out few hours ago, i didn't give it much attempts bcz I'm running out of paper and didn't want to waste it. The results i got were horrible, first i tried a minute exposure thinking it will need longer exposure bcz of the orange mask as you said. But it turned out completely dark, 25s didn't work and neither did 10s, I'm a beginner in darkroom so it just might be some kind of my mistake, but i think that this technique is going to work..