well as you see the sig it self doesnt have much .. although i seee what you wanted to do .. you wanted a stylish non detailed sig .. but ofcourse it didnt come out very well because you are lacking some photoshop knowledge .. as for most beginners in photoshop/digital arts etc. i reccomend to read some tutorials .. you firstly will make stuff by tutorials, by that you will improve your knowledge and in some time you can start making your own stuff, getting new techniques and styles .. there are plenty of tutorials already on RZ.. and ofcourse dont forget Google .. good luck
try not to put scan lines on this one but dots... its the same way as scan lines but with dots just one pixel... looks good on sig... but depends wich ones.