I have transformed an old T-shirt, it's crossover vintage-style camisole, I do think I have done a good design. However one of my friend thought I could do bett

I have transformed an old T-shirt, it's crossover vintage-style camisole, I do think I have done a good design. However one of my friend thought I could do better on the color combinations, not just grey and white. Is there anyone have deep sight? Pls give me some suggestions