Before you worry about the technical aspects the most important matter is the composition.
This lily - its a spider lily - is notoriously difficult to capture as a macro given such long stamens.
But what you have done suggests a possible interesting perspective, where all the pollen are arranged in a circle, almost like they are in a dance. And the DOF is adequate, meaning the front three are in good focus and the back three are off, and thus emphasising the 3D aspect of the "dance circle".
The only down side is indeed the busy background. This idea can be a superb composition against a black background or anything that dont compete against the dance of the pollen.
But as to a newbie attempt at macro I think it is good work, for at least I see - if what I see is reliable - that you may have compositional thoughts and ideas, even novel and interesting ones, as you shot the flower.
Also try to borrow some equipment before you buy them, or buy them second hand - which you in turn can resell - to see what new compositional possibilites are made possible by hardware.
As to the WB, it is a simple correction, a technical skill easily acquired (PM me if you like to know how).
More importantly put more effort on the harder-to-come-by, but
sine qua non skills, namely your compositional ideas and aesthetic sensibilities, for which some just cannot get it.
_____________________________________________
My Online Gallery
My
Top 100 pictures according to flickr.