Cheap answer... place something that would demonstrate scale just in front of or besides the figure... maybe knock that staff to the ground... I would certainly place the camera at least at her eye level if not above and try some different focal settings... my guess is wide angle to make the scene around her look big. BTW the OP image is gamma for my monitor and the "correction" is completely washed out. My gamma is set to match my printer. I use Levels and Highlight/Shadow in Photoshop rather than gamma in Poser. IMHO the scene would benefit from dramatic sharp shadows... have you figured out a rational light source for the scene and set it up? The window shows daylighjt and the chemicals seem to be glowing but the light source would probably be shine down at her from a sharper angle unless it is very low to the ground... if it were only ambient it might be bouncing up at her from the floor but in any case I think the "scale" of the light source needs to be figured out.