So, I received some instructions from ppl. At this moment, I made only something like the pattern. Yes, it's mirrored, but on the finished texture, I hope, when adding some details (or something like this), can cut this mirroring effect.

So, CnC please ;)

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Step Two.

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At the moment, I am working with the front part of the texture. What do you think? Any tips?

Fixed your thread title. [WIP] isn't a valid tag. I also changed the name to something more sensible.

Needs more drop shadows. A more consistent style would be nice too. I like how you shaded those top part things better than that on the tube parts. Overall there just seems to be a lack of consistency which is confusing.