You have two or three choices

1. create a scene in Poser/Daz studio and then add a photo of yourself in a paint program .

2. create a 'billboard' of yourself from a photo in a paint program and use it in Poser/Daz studio .

3. Create a character from say Mike4 that looks like you and be entirely 3d.

 

For 1 look at compositing tutorials.

For 3 look at figure creation and the Poser face room.