Increase Space_Left for move tree to right side.
Decrease Space_Left for move tree to left side.
Increase Space_Top for move tree to bottom.
Decrease Space_Top for move tree to top.
Example
Space_Left = 20
It's mean move to right side 20 points.
Space_Top = 80
It's mean move to bottom 80 points.
Here is my coding.
void setup()
{
//variable
int Space_Left,Space_Top;
//assign variable
Space_Left = 20;
Space_Top = 80;
//setup
size(300,500);
background(0,238,255);
//draw tree
fill(194,88,52);
noStroke();
rect(Space_Left+110,Space_Top+150,80,300);
//add curve to tree
noStroke();
fill(0,238,255);
ellipse(Space_Left+110,Space_Top+300,40,300);
ellipse(Space_Left+190,Space_Top+300,40,300);
//add leaf
noStroke();
fill(98,255,0);
ellipse(Space_Left+60,Space_Top+150,80,80);
ellipse(Space_Left+80,Space_Top+120,80,80);
ellipse(Space_Left+100,Space_Top+100,80,80);
ellipse(Space_Left+240,Space_Top+150,80,80);
ellipse(Space_Left+220,Space_Top+120,80,80);
ellipse(Space_Left+200,Space_Top+100,80,80);
ellipse(Space_Left+150,Space_Top+80,120,85);
ellipse(Space_Left+150,Space_Top+100,120,85);
ellipse(Space_Left+150,Space_Top+160,150,80);
//add apple
noStroke();
fill(255,0,0);
ellipse(Space_Left+70,Space_Top+150,24,24);
ellipse(Space_Left+152,Space_Top+160,24,24);
ellipse(Space_Left+220,Space_Top+140,24,24);
stroke(125,49,9);
strokeWeight(4);
line(Space_Left+70,Space_Top+138,Space_Left+70,Space_Top+128);
line(Space_Left+152,Space_Top+148,Space_Left+152,Space_Top+138);
line(Space_Left+220,Space_Top+128,Space_Left+220,Space_Top+118);
}