Well done on doing it successfully on a bigger wall. That’s an achievement. I’d do the whole wall again. Not just the small areas.

I have repaired a similar wall once, I smeared cornice adhesive over the area to be patched and experimented with a sponge until I got a similar finish to the original

Doing the whole wall will be a last resort, but thank you. In the mean time, I will give the cornice cement a go.

The problem was where a 90mm board had been fixed vetically to the wall. One side had dried gap filler, and the other a build up of paint along the edge. I scraped and sanded each side back to flat (and beyond in places) I found I had some Granosite left over from the earlier larger job. Using a small square end putty knife I spread the Granoflex acros and beyond the width, making it as flat as I could. I then used a small long nap roller to fruther sread it out. using rolling, dabbing and sideways sliding the roller I finally got it to cover the area, feathered into the exising and with a varioety of peaks and troughs. I then sprayed it with a little water to make it sag a little. An hour or so later I very gently dragged the edge of a clear comb-binder cover across the area to "knock down" the most pointed tops. The results are not perfect, but close enough.

Excellent post. Professional concrete grinding is often underestimated, but it plays a key role in creating a smooth, durable, and visually appealing surface for residential and commercial projects.