When my thoughts default to the same thing over and over I get pissed off, feeling uncreative. Many popular artists have recurring motifs in their art, which I think leads to increasing their "identity" or "style", as an artist, but for my own work I try to avoid it.
Love the second forest scene there. Explore it some more. Paint some views from inside looking out, instead of outside looking in. Just a random idea. Less outlines I'd recommend; rely more on lighting conveying shapes/forms. And keep up the crazy color, dude!