How do i put tileset together in 1 block?

[Rare]

This screenshot shows what i want to do.

Spoiler: show

you see In the SMB3 smooth Desert tileset mashed in the other SMB3 Desert how do i do that.layers and events?

[bossedit8]

You can use background objects on the blocks you want to merge. It is simple because you have certain background objects that you can put those background objects that are used as inside tiles to not only preventing from lagging it more but it can also used as multiple tiles merged together.

[Rare]

You can use background objects on the blocks you want to merge. It is simple because you have certain background objects that you can put those background objects that are used as inside tiles to not only preventing from lagging it more but it can also used as multiple tiles merged together.

I don't really get wha tyour saying. so let me get this strait. place a BGO Where you want to merge or put the bgo inside the blocks then go from there

EDIT:can someone make or link me a video

[RudeGuy]

You can use background objects on the blocks you want to merge. It is simple because you have certain background objects that you can put those background objects that are used as inside tiles to not only preventing from lagging it more but it can also used as multiple tiles merged together.

I don't really get wha tyour saying. so let me get this strait. place a BGO Where you want to merge or put the bgo inside the blocks then go from there

EDIT:can someone make or link me a video

Put the BGO where you want to merge. That's really simple.

[HenryRichard]

DETALED TUTORIAL:
Outline an area with a tileset, but don't use its fill tile. For example, this is the Super Mario World grass fill:
Then, fill it in with Background Objects that look like the fill.
You can then place blocks inside the fill.