Tikzpicture/figure shift

i created a figure in Inkscape and exported it to tex. I used bezier for drawing curves. When i import this to my text, there is a free space between the text and the picture, because some bezier points are out of the picture range. (See negative points in example)

Text \begin{figure}[htbp] \centering \begin{tikzpicture}[y=0.80pt,x=0.80pt,yscale=-1, inner sep=0pt, outer sep=0pt] \path[draw=black,line join=miter,line cap=butt,line width=0.680pt] (40,52) -- (40,311) -- (550,311) -- (550,52) -- cycle; \path[draw=black,dash pattern=on 0.68pt off 0.68pt,line join=miter,line cap=butt,miter limit=4.00,line width=0.680pt] (274,311) .. controls (402,-3) and (355,-59) .. (495,311); \end{tikzpicture} \end{figure}

Is there a way to shift the whole picture about these negative values and overlap the free space with my text? If i reduce the controls to a positive value, the curves are not useful for me.