It's hard to describe but a lot of the pics I see on the forum somehow seem to get the whole figure in frame while still maintaining proximity.
Am I making sense? Sorry
That could be done after the picture is taken. I have often cropped a picture before posting. That is why you sometimes see odd ratios - height to width.
When getting the whole figure in you concentrate on making sure he/she fits in the frame top to bottom. If I understand you correctly, having too much "empty" space on the sides of the figure can still make it look far away. Is that correct? If so, that's what can be cropped out before posting. To do so, you need some kind of photo program, although some cameras actually let you do it within the camera itself.
Take for example a photo I took at OSF back in November of a contest entry. Maximizing the height (although I could have done a better job before hitting the shutter) the picture looked like this:
After loading the photo into iPhoto. I cropped it and lowered the resolution (because the original is a full resolution shot) to make it post friendly and get rid of unwanted space. It turned out like this:
Is that what you are talking about? If so, then you will need a program that will allow you to crop your photos. One may have come with your camera. If not, my guess would be that you are not filling the frame with the subject. That's called composition.
My apologies if you know that already. But simply defined (in case you're not familiar) it's consciously determining what is in the frame (what the camera will actually capture). You see in the above examples, that while I was sure to get the placard in as well as the figure, I left a little too much space above the figure. By cropping that extra space out of the picture the figure becomes more prominent. I hope that makes sense. But you can also see that during my cropping session, I also took out space on either side of the figure changing the frame ratio (height and wide ratio).
I hope that helps, and makes sense. Let me know if you have any other questions, or if I misunderstood you and/or failed to address the issue in question.