Your profile picture should reflect your identity or brand. If you're a personal brand, it's best to use a high-quality portrait image that expresses your personality. If you represent a brand or a company, your logo could be the best choice. Choose an image that gets your message across at first glance.
Take the time to select or have a quality image created. A blurry or pixelated profile picture looks unprofessional and can turn off potential followers. Invest in a good photo or design to make a lasting impression.
Remember that your profile picture on Instagram appears in a circle. Make sure that the main motif of your picture is clearly visible in the circle and is not cut off by the edge. Experiment with different necklines to get the best look.