macOS How correctly to use my class in main.m?

//  "InitFormApp.h"

#import <Cocoa/Cocoa.h>

@interface InitFormApp : NSObject {
IBOutlet NSTextField *textfield;
IBOutlet NSImageView *image;
}
-(id)InitForm;
@end

// "InitFormApp.m"

#import "InitFormApp.h"

@implementation InitFormApp
-(id)InitForm
{
	[super init];
	[image setImage:[NSImage imageNamed:@"apple_big.jpg"]];
	[textfield setStringValue:[NSString stringWithFormat:@"User %@", NSUserName()]];
	return self;
}
@end

//  "main.m"


#import <Cocoa/Cocoa.h>
#import "InitFormApp.h"

int main(int argc, char *argv[])
{
    InitFormApp *initus = [InitFormApp InitForm]; // [COLOR="Red"]How it is correct????[/COLOR]
    return NSApplicationMain(argc,  (const char **) argv);
}

-(void)awakeFromNib
{
	[image setImage:[NSImage imageNamed:@"apple_big.jpg"]];
	[textfield setStringValue:[NSString stringWithFormat:@"User: %@", NSUserName()]];
}