Welcome to MTF.
That looks interesting. How well does it work?
It has several design changes from my Land Pride GS48. None of the changes look like they would actually improve performance, but probably make it easier/cheaper to build. In particular, your "blades" are much taller than the sides. One of the benefits of the grading scraper is the mixing that goes on as excess material flowing over the first blade mixes with the material the second blade is raising, which then flows over the second blade. Your design appears to eliminate both of those possibilities.
Also, no rippers, no adjustment at all. It looks like it might be fine if you have very loose material you just want to make a little smoother. But, if it is working for you and you built it yourself, that is great. It is much better than anything I have built out of metal in decades.