Outer eyes area looking hollow. Also a little swollen on upper cheeks (Photo)

I don't think this is botox related. You do have some relative hollowness around eyes and relative fullness of cheeks. You might benefit from strategic placement of filler to make the area more smooth with natural appearance.

After 6 months, Botox will have worn off. In treating eye hollows, a combination approach is best. I use a combination of lasers, microneedling/PRP, fillers and skin care/peels which can improve this area. See an expert. Best, Dr. Emer

The swelling is related to development of malar festoons. This is a difficult problem to fix and is unrelated to Botox. Hollowing in the lateral orbital area is correctable with fillers. I prefer Restylane and blunt cannulas for this area. It is safer and less bruising is noted. The undereye/tear trough area can be corrected at the same time.

After six months, any Botox effect will have worn off. You could consider having filler placed in the tear trough area under your eyes to fill in hollows.  I prefer to inject this area gently with a cannula instead of a sharp needle.  Regards,Dr. Ort

At this point 6 months after your Botox injection, the effects of the Botox have worn off and the swelling is probably unrelated. Actually, the photo itself does not really demonstrate much swelling. You do have a descent amount of undereye hollowing which could be corrected with placement of a filler such as Belotero or Restylane.