You may be tempted to splash out on trendy colorful clothing. Don’t. Red trousers are for sailing, not for selling. Unless your business is fashion, stick to pieces in grey, blue, black, camel/tan.
The biggest “mistake” I see is the (to my eye) objectionable burgundy shirt.
Black shirt? Fine. Grey. Yes. Camel? Sometimes. Yellow? If it suits you.Pink? Sure! Blue? Of course. White? Always. Outside of that, dark solid shirts just look cheesy. If you’d like to experiment with color in your shirts, wear patterns. Subtle patterns for work (a lavender dobby cotton shirt and blue knit tie add complimentary textures.)
Larger patterns for play. (See you can wear a golf/tennis shirt.)