You do not have six images to make an impression. Rather you have ONE image to maker her curious and five chances to undo the good you've done. The order in which you organize your images for your online dating profile is critical to your success.
The most important thing is for you to feel comfortable and confident. If hoodies and jeans is your daily uniform, we can make it work. if you are a suits guy, bring it. You can rock any look with the right attitude.
With that said, here are some things to keep in mind.
Even though you have approximately 6 images in your online dating profile, you do not have 6 chances make your case and get a swipe right. You have one, maybe two images to get it right, the rest is there to reinforce the opening message. In another words, you have four more chances to reinforce why they should go out on a date with you or you four more images to f*ck it up. Choose wisely.