LN
Start with Aviation Contract Service Providers. These are companies that place "on-demand" help in a variety of aviation settings. The benefit to you is that they already know their way around the industry and have multiples of contacts. If they can help you they will do all of the footwork for you. Seems to me your JAR-66 school should be able to assist you. I live in the US so I'm not JAR-66 savy. One would think that you face a common need for JAR-66 students? Maybe you should just start a JAR-66 practical experience placement service yourself!!! You'd make more money at it over here in the US then actually working in aviation these days!!!!! Good luck!