How to Center Image above another image inside canvas element

Question

I'm trying to add Images above another image in the canvas element

What I'm trying to reach:

Here is what I get:

images source: https://i.sstatic.net/L1Dxu.jpg

and this my code:

var shirt = new Image();
shirt.src = "https://i.imgur.com/3rTZGXP.png";

var draw = new Image();
draw.src = "https://i.imgur.com/2abnbj1.png";
//draw.src = "https://i.imgur.com/TSJRGjo.png";




window.onload = function() {
var canvas = document.getElementById("canvas");

var ctx = canvas.getContext("2d");    
ctx.fillStyle = "blue";
ctx.fillRect(0, 0, canvas.width, canvas.height);


ctx.drawImage(draw,0,0 );




ctx.drawImage(shirt,0,0,canvas.width,canvas.height);
}

#canvas{
    width: 352px;
    height: 448px; 
    left: 0px; 
    top: 0px; 
    user-select: none; 
    cursor: default;
}

<canvas id="canvas" width="352" height="448"></canvas>

Answer 1

thanks to @tokage-dizayn and https://stackoverflow.com/a/19473880/7511165

I came to this code

var shirt = new Image();
shirt.src = "https://i.imgur.com/3rTZGXP.png";

var draw = new Image();
draw.src = "https://i.imgur.com/2abnbj1.png";
//draw.src = "https://i.imgur.com/TSJRGjo.png";




window.onload = function() {
  var canvas = document.getElementById("canvas");

    var ctx = canvas.getContext("2d");    
    ctx.fillStyle = "blue";
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    
    console.log(draw.height,draw.width);
    
    var maxSize  = 160;
    var ratio = Math.min(maxSize  / draw.width, maxSize / draw.height);
    var width= draw.width*ratio, 
        height= draw.height*ratio;
    
    console.log(ratio,width,height);

        
    ctx.drawImage(draw,95,90,width,height);
    
    
    
    
    ctx.drawImage(shirt,0,0,canvas.width,canvas.height);
}

#canvas{
    width: 352px;
    height: 448px; 
    left: 0px; 
    top: 0px; 
    user-select: none; 
    cursor: default;
}

<canvas id="canvas" width="352" height="448"></canvas>