First, thanks for the compliment, Legos are a medium I enjoyed as a kid, and I've always loved AFVs so I figured "What the Hell!"
Second, brace yourself, because the answer regarding the flowers is pure stupidity. - All of my tanks that I build are not "mini-fig" scale. That is assuming the Lego mini figs represent a 6' adult, which would mean I'd have to build my tanks in a 1:40ish scale. I don't like building tanks that small, so my Lego mini figs represent ridiculous plant/human hybrids known in Thai folklore as "Naree Pon". - They are very small humanoids. This way, other builders in the Lego community don't sit there complaining my tanks are too big, and NOT mini fig scale. I know it's completely absurd, but I include them in at least one picture of each tank to showcase some of the crew features. I'll be photographing my SA-4 in the next day or two, and I'll let you guys know when it's up! Take it easy.