well that doesn't look so bad! it looks quite nice! however, i agree with the black sand. my tanks looked a little odd with glass stones so i switched to black tahitian moon sand and it made a big difference. you can also get white sand and maybe place some glass or black stones in it to make a sort of zen rock garden look. you can then get some natural looking silk plants in various sizes, put the largest in the back and the smallest in the front. it creates a lot of hiding spots and some nice depth. you can also consider a backdrop for the back of the tank so you can't see through it. good luck! post pics if you change anything!