Will they look symmetrical after breast implants alone?

Unfortunately breast implants can make normal breast asymmetries more noticeable.  If you want to achieve the best symmetry possible then consider a lift of the lower breast in addition to breast implants.  For more information please read below:

Your asymmetry is mild, and let me assure you that most women have some asymmetry. Implants are going to increase your volume and re-inflate your breast tissue, but even if you choose two different sizes, there will still be some differences. A minor lift will help to minimize any differences in volume and nipple position. Good luck!

Thank you for sharing your questions and photograph.  Implants alone are used to increase the overall size/volume of a woman's breasts but can not be used to appreciably change their shape or nipple position.  Though breast size differences can be improved upon by using different size implants in your right and left breasts, a breast lift would be needed to adjust the other differences mentioned in your narrative. Hope this helps.