get 1 nice curly spiney piece of driftwood,tie some moss and plants onto it,make it a vocal point in your aquarium,get nice sand,loads of plants,a couple nicely shaped rocks,make a nice lawn in the front of the aquarium
First lets ask some questions so we can recommend what the OP wants, just sand won't get you some results as opposed to something like Aquasoil or Azoo plant grower bed.
What do you want the tank to look like aquascaped pretty much means you designed it. I could throw rocks in a tank that are put together nicely, put anubias in between them and say it is an aquascape, almost no work, and can look really nice if down right. What type of maintenance are you willing to do? A high light tank will require more money, more experience, and more work compared to a lowtech tank.
Also, smaller tanks need way more balance than a bigger tank especially when you are going high light/tech, the slightest shift in balance can throw the whole tank off and you will be trying to recover it. That means you need at least one timer, for the lights, and if you decide to go the high light/high tech you will want another for the CO2.
First lets ask some questions so we can recommend what the OP wants, just sand won't get you some results as opposed to something like Aquasoil or Azoo plant grower bed.
What do you want the tank to look like aquascaped pretty much means you designed it. I could throw rocks in a tank that are put together nicely, put anubias in between them and say it is an aquascape, almost no work, and can look really nice if down right. What type of maintenance are you willing to do? A high light tank will require more money, more experience, and more work compared to a lowtech tank.