hi im Guaboa!

Recently I've been getting the same evaluation over and over and over. It said, "That's still good! But you can do better, right? Why aren't you doing it?" At the same time, I feel a little less popular with my painting (although it wasn't very popular before), so this time I tried stronger weathering, chipping, and more colorful photo editing (not like putting a filter on the picture or anything like that. That's a scam, isn't?) I thought it was basic to raise the layer neatly and prettily, so I wasn't being careless. I uploaded 5 layers of layering and regret not shading this time.
The excuse has been prolonged, so to begin with, were the techniques used in this painting the wrong choice? I wonder if I should have focused on adding more basic colors.