diff --git a/tikz/texture/texture.png b/tikz/texture/texture.png
index cbac2a6..22593e7 100644
Binary files a/tikz/texture/texture.png and b/tikz/texture/texture.png differ
diff --git a/tikz/texture/texture.tex b/tikz/texture/texture.tex
index d17369d..dd12e6d 100644
--- a/tikz/texture/texture.tex
+++ b/tikz/texture/texture.tex
@@ -41,13 +41,30 @@
       \draw[fill=black!25] (axis cs:-1.5,0.5) rectangle (axis cs:-1.0,1.7) node[pos=.5] {B};
       \draw[fill=white]    (axis cs:-1.5,-.7) rectangle (axis cs:-1.0,0.5) node[pos=.5] {D};
 
-      \draw[red,thick] (axis cs:-0.5,-.5) rectangle (axis cs:1,1.5) node[pos=.5] {D};
+    \end{axis}
+    \begin{axis}[
+        axis x line=middle,
+        axis y line=middle,
+        grid = major,
+        grid style={dashed, gray!30},
+        xmin=-1.25,     % start the diagram at this x-coordinate
+        xmax= 1.25,    % end   the diagram at this x-coordinate
+        ymin=-0.75,     % start the diagram at this y-coordinate
+        ymax= 1.75,   % end   the diagram at this y-coordinate
+        xlabel=$s$,
+        ylabel=$t$,
+        %xticklabels={-2,-1.6,...,7},
+        %yticklabels={-8,-7,...,8},
+        tick align=outside,
+        minor tick num=-3,
+        enlargelimits=true,
+        tension=0.08]
+      \draw[red,thick] (axis cs:-0.5,-.5) rectangle (axis cs:1,1.5) node[pos=.5] {};
 
       \node[label={180:{1}},circle,fill,inner sep=2pt] at (axis cs:-0.5,-0.5) {};
       \node[label={180:{2}},circle,fill,inner sep=2pt] at (axis cs:1,-0.5) {};
       \node[label={180:{3}},circle,fill,inner sep=2pt] at (axis cs:1,1.5) {};
       \node[label={180:{4}},circle,fill,inner sep=2pt] at (axis cs:-0.5,1.5) {};
-
     \end{axis}
 \end{tikzpicture}
 \end{document}