I don't know if it's because I'm a meticulous person but I constantly finding myself paying attention to details. Even though you have all the right clothes, it's the details that will give you a top-star business casual look. Here are my tips:
1. Nail polish: A beauty enhancement that a lot of people don't realize that's noticed. Never wear chipped polish. It needs to be either all on or off. Chipped polish is sloppy. Also, pay attention to the color. My friend, who motions a lot with her hands when she speaks, once sported a dark plum nail color during an interview. She told me later that the interviewer's eyes kept following her nails while she spoke. My friend could tell that it was a distraction that took away from her answers.
2. Jewelry: Pick accessories that match with your outfit but that are not too over the top. Take notice if a piece jingles as you move or if your earrings sway a lot. It is distracting. When done right, accessories really enhance and complete your look. I will probably do a more in-depth post on this subject later.
3. Make-up: It may seem silly but there are many times when I see a someone wearing a great outfit but her make-up is done so sloppily it detracts from the whole look. A few little reminders such as wearing the correct foundation shade, even eyeliner and a neutral shadow with a bit of blush will go a long way. Curling your lashes will help you open up your eyes and brighten your whole face.
4. Clothing fit: Before leaving your home make sure that your clothing fits well, is unwrinkled and free of hanging threads. I like to have a lint roller in my car at all times, because I wear a lot of black, which tends to show more lint. Also, when buying blouses, skirts or bottoms, make sure that there are no gaps that show when wearing the clothing. It may take longer to find the right fit, but in the end it makes a difference in your appearance.
5. Clothing material: The material of your clothes can influence your overall appearance a lot. Different materials drape differently. Also, the type of material can deem a piece business casual appropriate or not despite it's cut. For example, a lame button down shirt gives off a totally different vibe then a cotton one. Make sure that the pieces you choose to wear are complete in and of themselves in relation to your outfit.
Remember that dressing business casual is more then wearing the correct clothing. It's about the whole look.