Hi, HellRaptor, thanks for congratulations. Can you draw Alvarezsaurus, Mononykus, Albertonykus or Shuvuia?
About imrovement: your dinosaurs are preety correct-looking, I can only mark one thing: when you drown a long time ago scales for australovenator some of scales had too oval form the real reptiles have different shapes: round, square and even triangle. You can check modern reptiles photos for reference. (I don't know how you are good at scaleforming now, so don't take the text higher deeply).
I think you will have a big improvement on creating more detailed environments around your creatures: other creatures on the background, waters miroring the skies, leavy trees with bracnches sometimes with litle birds, sand with stones and old bones of other animals and other stuff like that. Actually the Australovenator painting was preety close to that kind of work, but the trees seems too mono-coloured, as for me I would add some variations - darker colours on the background and lighter in the foreground, spots on the trees to mark that they are not monolite triangles. So that's all I can say for your improvement now.
With best wishes, Kirillus