Pour and repair cement step block

[rosebarton]

Hello!

I have this single cement step block outside my laundry door. I'm wondering if there is a way to repair and refill the crack and the chipped corner in it so it can be repainted?

Additionally, I'm wanting to make a similar one outside my back door.

I've watched this video How To Pour A Small Concrete Slab - Bunnings Australia.

Would this be the right process to follow? Especially given

- mine would be poured over existing concrete paving, not soil or sand

- would less than 1m squared, would I still need steel mesh at that size

Many thanks in advance!