text wrapping around graphic

I am trying to use pages to do what I am familiar with in Microsoft Publisher.

In Publisher I could have a line picture with uneven edges and select adjustable points. I would then have points outlining the shape and they were adjustable. The text would then follow this outline of my shape that I adjusted myself.

I get how to do this now in pages but I have not been able to fine tune it. Depending on the text it may be very close to the drawing on the right but not on the left. And yes I have it set to go around all sides. And if I move the object it will then be very close on the left but not on the right.

Is there any to "fine tune" the text wrapping in pages.

This just seems to follow a rigid straight line instead of following the shape of the drawing. I want it to be like in a magazine where the text follows the shape of the picture. And I did do instant alpha. I have been experimenting as suggested but am not really getting very far. Maybe pages layout just isn't designed for this.