I think you have a pretty solid understanding of technique and shading. When it comes to colouring, always look at references for inspiration. For this drawing, I would have looked at references of lizards, frogs, birds because nature has some really wild colour choices. Think of your character and what does the colour say about them. There are a million ways you can approach colour. These are some steps that I would do so I hope it helps =)
Ohhh, nice~ Thanks for the advice!! Really appreciate it!