diff --git a/geometric_separators.pde b/geometric_separators.pde
index 6c4b674..5a2f0a4 100644
--- a/geometric_separators.pde
+++ b/geometric_separators.pde
@@ -1,9 +1,13 @@
-
 // Reset Button
 int reset_x = 100;
-int reset_y = 400;
+int reset_y = 450;
 int reset_w = 100;
-int reset_h = 50;
+int reset_h = 25;
+// Calculate Button
+int calc_x = 250;
+int calc_y = 450;
+int calc_w = 100;
+int calc_h = 25;
 // Button Shapes
 PShape reset;
 PShape calculate;
@@ -12,11 +16,11 @@ ArrayList<PShape> input = new ArrayList<PShape>();
 
 // Setup
 void setup() {
-  background(0);
+  background(255);
   size(500,500,P2D);
-  // Create reset button
+  // Create buttons
   reset = createShape(RECT, reset_x, reset_y, reset_w, reset_h);
-  
+  calculate = createShape(RECT, calc_x, calc_y, calc_w, calc_h);
   noLoop();
 }
 
@@ -28,7 +32,7 @@ void mousePressed() {
     input.clear();
   }
   else {
-    PShape new_ellipse = createShape(ELLIPSE, mouseX, mouseY, 50, 50);
+    PShape new_ellipse = createShape(ELLIPSE, mouseX - 12.5, mouseY - 12.5, 25, 25);
     input.add(new_ellipse);
   }
   redraw();
@@ -36,9 +40,13 @@ void mousePressed() {
 
 // Draw
 void draw() {
-  background(0);
+  background(255);
   shape(reset);
+  shape(calculate);
+  text("Reset.", reset_x + 25, reset_y - 10);
+  text("Calculate.", calc_x + 25, calc_y - 10);
   for (PShape ellipse : input) {
     shape(ellipse);
+    fill(0);
   }
 }