Do I need a revision to have cleavage? (Photos)

It appears from the photo that you are very early in your recovery. You will want to wait a few months before determining if you are happy with the results. Cleavage is influenced by how far apart your breasts are as determined by your bone structure. There are tricks that surgeons can use to help the breasts appear a little closer together, but the base anatomy cannot be changed.

It is important for patients to understand that augmentation will "augment" all aspects of your anatomy. The spacing of the footprints of the breast on the chest wall will vary from one individual to the next. Widely spaced breast will appear more widely spaced and vice versa.
The spacing (cleavage) is defined by the pocket. The pocket is defined by the plane of augmentation.When placed submuscular, the medial/middle limit is the sternal origin of the muscle. Wide sternum greater separation of the breasts less dramatic cleavage. This space can be narrowed (with some risk of synmastia) when the devices are placed subglandular or "over" the muscle. There is no muscle obstructing a medial push, however, there is a higher risk of over-dissection and midline migration of the implant (the dreaded "uni-boob").
With regards to your specific question, a higher profile device is narrower but will project more. A wider device can create the illusion of closer spacing between the breasts (when placed subglandular). Most patients will fit into the "moderate +" category...but this will depend upon the measurements of your breast width. That being said, it is never recommended that you stray far from your unique BWD.
And remember...love the look you choose...not the cup you desire.
Based on your photos alone (which appear very early), you have a very reasonable result. Much will change in the months to follow. Cleavage is typically defined as the space between the breasts at midline. This is generally not changeable. If your concern is upper pole fullness a higher profile/larger implant may be an option.
As always, discuss your concerns with a board certified plastic surgeon (ABPS).