yes! thank you for taking an interest in my drawing!
it said you wanted constructive criticism? well I don't know much about vectoring, but the color palette is a bit overwhelming. color theory is very hard to understand but a easy first step would to find pictures you like (I guess browse your favorites) and try to emulate those palettes. also this website is a gem for color palettes:
colorschemedesigner.com/hope that helps! feel free to vector any other pictures in my gallery if you want!