To install ClockWorkMod recovery on your Micromax Canvas Spark, you will need to root your Canvas Spark first. Follow these steps to do so -
1. Download the Framaroot app from http://forum.xda-developers.com/apps/framaroot/root-framaroot-one-click-apk-to-root-t2130276. You may also use Kingroot 4.0.0 aswell for the purpose.
2. Install it on your device.
3. Install SuperUser.
4. Select an Exploit and wait. If it fails select the next Exploit.
5. Once successful, you will get a message stating that the super user permission has been granted.
This means your device has been rooted.
Now , follow these steps to install CWM recovery -
1. Download ClockWorkMod recovery from http://www.clockworkmod.com/rommanager.
2. Copy the recovery file to your internal or external memory.
3. Download and install Flashify app from https://play.google.com/store/apps/details?id=com.cgollner.flashify.
4. Open the Flashify app and accept the disclaimer.
5. Locate Flash tab and browse to the CWM recovery image you just downloaded.
6. Confirm the Flash Recovery? box.
7. Tap on Yup and wait the flashing completes.
8. Reboot your device and you are done.
Please note that rooting and installing custom recovery voids your warranty. It may also brick your device if any of the processes go wrong. Please proceed at your own risk.