Thanks Saskia, you've been amazingly clear! My AFF certification is italian, and italian rules say that you need to pass a skydiving exam for jumping with others on your belly. This exam consists of some turns, tracking, basic RW, basic precision landing, and I think that's it. Now, what I'm thinking is checking the requirements of the Belgian system with the DZ and then understanding what I need to learn to get a basic license so I can jump with others, either here or in Italy (at the DZ where I completed my AFF they do exams in October so I have plenty of time to get prepared to it).
Thank you so much for your help, it's very important having the possibility to get clarifications from expert fellow jumpers! Well, now I'd better get out and buy some thermal clothing for winter jumps!
Thanks again!!
Blue skies,
Simone