Here's a pic of what I want my boobs to look like. What should I do to get this look? (Photo)

I looked at this as well as your previous question.  I did not see any pictures of you.  Without pictures, no one can advise you on what to do to get the result that you desire.  If you are sagging then you probably need a breast lift and that will result in some scarring.  Sorry.  No other way around it.  If you want volume then an implant is the answer, with or without a breast lift.  My best answer would be for you to schedule a consultation with one or two board-certified plastic surgeons who can examine you in person and offer advice.

Far more important than the technique is the skill and experience of your plastic surgeon. Choose your surgeon rather than the technique and let them explain why one technique may be better than another. See the below link on some suggestions on finding the most qualified Plastic Surgeon for a  Breast Augmentation.

From the photograph provided it looks as though you want to be fairly busty. The larger the implant the better it can camouflage ptosis of the breast. Physical examination would be necessary to determine if a mastopexy could be avoided.