Translation of modestia

So you have taken a German course in the Ghoete Institute. Well, I certainly learned something with you, and your German is already a lot better than last time. I think we really did it.
I think I have told you that I won't charge you for this kind of help. I looked at the sentences and I found them a little too long. They were good, but I understand why it took you so long and I think the point is too keep the shorter.
My company is a consulting firm for IT systems for banks and insurance companies. I work with system analysers and bank employees. It is a big challenge, technically and commercially. I love it.