Improving Japanese language skills

I will be giving a presentation in Japanese next week about life in Fukushima as a foreigner and Switzerland.

Then, next week-end, I will be attending a one-day workshop about interpretation to/from Japanese.

I am afraid that although my spoken Japanese skills have been improving a lot since I moved to Fukushima last year, my Japanese language reading/writing skills are not yet at a professional level. I am working hard on the said skills, though.