I saw it and i am really happy about it:) You can edit the post at Steemit delete the photo and upload a new one. About the posting, it is just my point of view. It does not mean that i am right because other users are very succesful posting 3 times a day. But what they are posting is the key to their success. their material varies with posts uploaded to different platforms like nTopaz. You see they are a lot of communities at steemit, with different themes. Each one has a platform like ntopaz and if you want to be really active maybe you start checking them:)

About ntopaz, check this posts also if you like:)

How to publish at nTopaz
Tips for succesful posting at nTopaz