Connect the Arduino to the ATtiny as follows:

• Arduino +5V ---> ATtiny Pin 8
• Arduino Ground ---> ATtiny Pin 4
• Arduino Pin 10 ---> ATtiny Pin 1
• Arduino Pin 11 ---> ATtiny Pin 5
• Arduino Pin 12 ---> ATtiny Pin 6
• Arduino Pin 13 ---> ATtiny Pin 7

Put the 10uF capacitor between ground and the Arduino reset pin. Make sure to keep an eye on the capacitors polarity (ground to ground!).

This capacitor effectively filters out the incoming reset pulses that come from your PC when the Arduino software starts to program your part. Because you want to program a part further downstream, you filter the reset pulses coming into the Arduino. Otherwise, you’d invoke the Arduino’s bootloader and program that Arduino, and that’s not what you want at all;);

• Connect your Arduino, open the IDE, and upload Example> ArduinoISP sketch;

This Arduino-supplied example sketch turns your Arduino into an ISP (in-system programming)

Again ;

• Open Arduino IDE
• File > Preferences and in Additional Board Manager URLs: and Copy/Paste this:

https://raw.githubusercontent.com/damellis/attiny/ide-1.6.x-boards-manager/package_damellis_attiny_index.json

• Click OK
• Tools > Board > Manager, install: ATTiny and close Arduino IDE

Open Arduino IDE,

(1)Board: ATtiny25/45/85

(2)Processor: ATtiny85

(3)Clock: Internal 1 MHz

(4)Port: COMXX(Arduino Uno)

(5)Programmer: Arduino as ISP

Upload the below given code:

/*
 Fading LED with ATtiny85 

  

  The analogWrite() function uses PWM, so if you want to change the pin you're
  using, be sure to use another PWM capable pin. 

  This example code is in the public domain.

 
*/

int led = 0;           // the PWM pin the LED is attached to
int brightness = 0;    // how bright the LED is
int fadeAmount = 5;    // how many points to fade the LED by

void setup() {
  
  pinMode(led, OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() {
  
  analogWrite(led, brightness);

  // change the brightness for next time through the loop:
  brightness = brightness + fadeAmount;

  // reverse the direction of the fading at the ends of the fade:
  if (brightness <= 0 || brightness >= 255) {
    fadeAmount = -fadeAmount;
  }
  // wait for 30 milliseconds to see the dimming effect
  delay(30);
}

Also you can get Code and circuit diagram from my Githubpage.

ATtiny Pinout:

Use copper wire for the connection and solder it to leads.Make it is like candle as per your imagination and idea .

The following video shows how my circuit sculpture looks .

Happy Making :)