Should I use acrylic gloss on my painting or put glass over it in the frame?

I have a textured acrylic painting that I am working on…
It has lots of sands, glitters, glosses and stuff…

The edges are matte because I used an airbrush around the edge… the center is still glossy.

I want to even out the entire painting without loosing the texture difference.

Is this a job for a glaze or glass?