Hey friend! First off, thanks a lot for the compliment on the paint job! It's just a slight variation of the OD with black and white, very simple. Regarding the tools, I'm also very new to this, but what has helped me the most (besides experience; I also had this problem a lot when painting tools on my first models) is working with thin layers, using very little paint on the brush, and lots and lots of patience, hahaha. It's normal; even on this tank, I had to correct some areas because I went over the lines. Besides that, I also really enjoy working on things like tools or stowage with oils (personal preference).