Today I messed around with creating things, and applying textures to them. I learned how to import my own textures (File > Upload Image) and that it cost $L 10 to do so. Using the targa format for images means that transparency is easy to achieve by using Alpha Channels in photoshop. The fishtank pictured utilises transparency. Improvements to this design could include fish that move, and animated water effects, but this is beyond my skills at the moment.

To keep created objects for next time (they will be erased otherwise), link them together (Ctrl + L) and give them a name (General tab), from there you can right click on the object > More... > Take Copy. This stores it in your Inventory for future use.