Upload & Sell: Off
As much as I hate to do this, I think I'm just going to omit the images with heavy ghosting. The gallery of 80 is now 61. Thanks.
BTW-Yes, this was all volunteer. No, I was not compensated for this in any way.
You responded to my earlier comment by a short statement asking me to explain.
As far as explaining what is wrong with the photos, I think you can get that kind of help from anyone who is frank and honest and knows even a little about photography. Since others here on this forum were looking but not commenting on your photos, you may not get that advice here on this People forum. On the other hand, if you were to post these photos in the Lighting forum or the Wedding forum (or similar elsewhere) you may get more comments (or flamed).
As far as getting advice on what to do differently with your flash system and camera, I think you would be best advised to practice, AND since it seems, based on your own comments above, that you are not sure what to do, I suggest you find a local photographer who is skilled with flash and offer to pay them for a private workshop or tutoring or lesson.
As far as your response to "not show the photos," I think you probably misunderstand my message, so I will explain my POV below:
While I understand that that may be the natural response to some criticism, that is not what I suggest you do.
Because much of what we photographers look for is "improvement" or "excellence" in the image quality. Many photographers are self-critical. Some don't know what they are "not seeing" and some shoot pictures and get mixed results and are happy with those that seem to look OK or "within the norm" of what they see others make.
On the other hand, what most recipients of a free photo (print) look for is very different.
And, in any art medium there is something known as "happy accidents" that simply means that some accidents may yield appealing results.
In this case, some of the ghosted images may strike the kids as "cool" and they may like them because they do not look ordinary. In short, the kids may like those photos.
On the other hand, I would expect that some cultures around the world would not like seeing a partially transparent figure (or themselves) as this may have some negative meaning (for example, it may strike some cultures that the person is going to die or is not trustworthy, etc.).
So, I would be careful and first show some of the images to people from THAT culture AND people that are mature (or more inclined to know cultural taboos and superstitions), and ask THEM (not a online photographers forum) IF the ghostly figures will be seen in a negative way.
IF they respond (and that may be difficult to get an honest/frank response depending upon the culture and whether they are afraid of offending you) that the ghosts are "not good to show" then you know how to proceed.
So, in this case, I think it would be OK or natural to show those photos to the kids and your contacts at the orphanage, IF you first show them to someone mature FROM that culture who appreciates your work/gift but ALSO has some depth to be aware of how a ghostly image may be seen or interpreted by THEIR culture AND they give you FRANK/HONEST advice. .
I hope these comments and suggestions help you and others.
And, I posted this simply to help you with some answers or suggestions as I see it. Others will naturally see the issues and your work differently.