squishing 2 images on top of each other

imagesquish.m

- (IBAction)mergeImages:(id)sender {
  UIImage *myFirstImage = [UIImage imageNamed:@"lemonface.png"];
  UIImage *myTopImage = [UIImage imageNamed:@"crateKitty-holdingWater.png"];
  CGFloat yFloat =10;
  CGFloat xFloat = 10;
  UIImage *newImage = [self placeImageOnImage:myFirstImage topImage:myTopImage x:xFloat y:yFloat];
  [[self theNewImageView] setImage:newImage];
}

-(UIImage *)placeImageOnImage:(UIImage *)image topImage:(UIImage *)topImage
x:(CGFloat)x y:(CGFloat)y
{
// if you want the image to be added next to the image
// make the CGSize bigger

CGSize newSize = CGSizeMake(image.size.width-20, image.size.height/2);
UIGraphicsBeginImageContext(newSize);
[topImage drawInRect:CGRectMake(x, y, topImage.size.width, topImage.size.height)];
[image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}