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Looks pretty good Alberto, I like it!
If I may, a bit too much splatter /overspray with your mottle, you can see a lot of very small overspray, thin your paint a little more and vary your pressures to achieve a finer pattern....practice, practice practice! If you still get some of the overspray during this process you can run a real thin spray of the RLM 76 in between the mottles to reduce the splatter effect and this will help blend the colours a bit more, but it needs to be done carefully, sometimes a minor respray of the primary colours helps this blending process too. Hope this helps!