anything which would look good
then do a sketching for the side panel in paintbrush .
you can do square shape with rounded edge. OR the windows logo. or four triangles. when the design is final do the same sketch with a pencil on the side panel and now communicate with a grill maker. he will cut the panel.
you have to search for the acrylic sheet in glass shop where glass cutting is done in the that shop itself.take the measurement of your side panel and get the sheet accordingly. cut it by them according to the design.
always keep 1 & half inch from the edge of the sheet so that you get a well space for pasting.
are you a resident of kolkata ?