start a new project in PS make the size 3 pixels wide by 3 pixels tall zoom all the way in take 3 even squares and make steps in one direction then click edit define as pattern name it then use ur paintbucket on pattern and fill in where u want the scanlines then right click the layer and set the blend on it
thing that i would do bro is lowering the opac on the render and if it isn;t light enough (i tried it with curves some times came out ok) making the render a bit lighter with curves evan
that subzero sig is cool but its everywhere....and i think that sig you made is cool mixing stuff up is always good
