In defense of the drawing, I would say that here Sarada should be at least 15-16 years old....
Ikemoto's problem for me is that his style is too different from Kishimoto's.
If it were, a Jojo character I wouldn't mind, however, that pointed face, those frills, pronounced lips..... it's the same problem as Eida or Code, they don't seem like characters from the world of Naruto to me, but more than models of Vogue or Korean pop stars.
In comparison with the women of Kishimoto, all very simple in dressing with soft faces and not too explicit sexuality (not even in cases like Tsunade)....