Want to change grount texture without estate rights

[Sorciaa]

I just picked up 1/4 of a sim. it had everything I was looking for except it is grass textured. I asked the manager and they can not change the texture so I am looking for something I can use. the few things I have seen dont explain if the ground can be raised or lowered and still work as I dont want it totally flat, or the textures to blocky, or it to have a massive amount of lag, any one have some suggestions ?

[Shudo]

Normally you would use either mesh landforms, or do the terrain first and then use something like https://marketplace.secondlife.com/p/LandMap-Change-your-ground-texture-without-land-powers/236734 to put down sculpties. Not perfect, but it can be quite passable if you take time and do it slow.

[Sorciaa]

that was the one I was looking at, I watched the vid but it did not explain editing it to much