Create a pulsating star

I was wondering if anyone can help me in the right direction.

I need to make a gently pulsating star (as in star of Bethlehem) to key over a static night sky shot. I see that there are some SciFi stars in the Motion5 library but they are all very epileptic in their movements - much too extreme. Despite twiddling with their Emitter preferences I have been unable to adjust it to how I'd like it to be.
I am looking for a simple circular star shape with a fat, blurry glow that pulsates gently.

Thanks in advance for any advice!

Do you have an image from google search that looks like something that you want? This can make it easier for us to help you.

Good point.

Something like this?

Hello. Please let me know if this is close to what you need: cloudup.com/cHe10iwskjD

Have a great day!

Wow Deyson! Thank you so much. That is a perfect pulsating star!

I came up with this version. The length and widths pulsate, as well as the glow. All done inside of Motion, so you can adjust anything you want.
DOWNLOAD

Ben the link is not working.

You are very welcome! I am glad you liked it! Please, have a beautiful day!

Oops, missed on letter in the URL. It works now. Check it out and see if that is to your liking.

Looks good Ben!

Thanks Ben!

I highly encourage you all to reverse engineer it, improve it. I simply put Randomize behaviors on the width, start point, end point of the line. You have to make a line (or any shape outline) Airbrush to do that. I'd be interested to see what someone can improve on that, cause it is just really super basic and plain.