I have a friend in the Netherlands who has been a contributor to this site: Hans Muller. I hope he is in good health - I haven't heard from him for some time. Perhaps he will see this and respond.
You obviously have considerable talent and drive. I applaud your work, but would like to see you more closely adhere to traditional design and architecture. Though your rifle is interesting, it resembles a more contemporary approach to longrifle architecture, to be gentle. You obviously have the skill. I'd hope you will take this as constructive critique, and endeavour to more accurately portray these iconic firearms.
And a sincere welcome to this site!