if u wanna make sigs on photoshop go on new then make it 400x60 pixels wide and big then just draw scribbles on the sig then go Filter>blur>radial blur then put zooom 50 then ok.
after that do sketch>chrome ok then image>adjustments> Hue/saturonion ( whatever the last word says) then pic a color then ok that makes a cool background. to put pics on go file open>your pic then get the move tool and move it to your sig then youll have it on ya sig then put some text in itll be cool after that.