the gravel isnt my to my taste,( black is red isnt)
and not very natural looking ( fish appreciate more subtle colours) maybe move the large dec to one side of the tank( angled), and add a lot more plants..a bunch of cabomba would fill ot a space quite quickly and with little/ no effort
oh now i sound nasty at the end of the day as long as you are happy with it thats all that matters
i like the ornament but it stares you in the face when the fishes are supposed to be what your looking at just a thought
i like the black and red gravel as well but it doesnt look very natural (more my taste) but thats your taste so if you like it its good id take shelaughs advice and get some more plants to blens everything together more
nice first tank though
regards scot