Your logos are uninspired, which is not an issue of specific techniques, but rather a problem with design. They just are what they are - knock-offs of other logos and it shows. If I may say so: Turn off the computer, have a little fun with pencil, ink and paper, scribble away. Then explore how you could transfer those designs into the digital world and learn the necessary techniques along teh way. Or, IOW: You are hampering yourself too much by thinking about how to do things before even knowing what to do, which limits the exploration of your own creativity and developing your own style.