Mozito, there is a lot of good advice in the archives here concerning how you can improve your condition. Unfortunately it is going to be tough as English is not your first Language. I can just about underatnd what you are saying - it looks like you are using translation software - but it will be difficult to get into dialogue about this.
One thing I will say, do not be fooled into thinking that there is a weakness or something wrong with the muscles in your hand or your fingers, and that somehow traditional exercises will make it better. Focal dystonia is not like that.
