I started out my project by drawing a very preliminary sketch of my landcape. Cutting up pieces of paper for all the elements of the landscape, I determined which LEDs should go to each. I put all the matching colors for each element but the sun got a red LED because I did not have a yellow one. :( After laying out how many LEDs I needed, it was clear that I needed to do a parallel circuit. Starting by picking out the resistors and soldering them to the negative lead of the LED along with wiring leading to the dual row barrier strips.
Then, I connected my wiring to the positives of each LED which led through the switch to the battery source. I ran into the problem of not having the right resistors for each LED due to which some of my LEDs either burnt out or have trouble lighting up (such as the blue in the cloud) but the overall process of laying out the parallel circuit and figuring out how to bring everything together was definitely a big learning process for me.