Unless there is a safety issue of some kind, there is really no “wrong” way to make a model railway layout. There are as many model railway layouts as there are train enthusiasts.
If you haven’t chosen which scale of model train you’re interested in, consider the amount of space you have available. Even if all you have is a card table, you can find tiny scale trains like the N scale and Z scale that will fit. And even if you have plenty of room, it’s perfectly OK to have tiny scale trains.
The most popular scale is HO or “half-O” scale. It is small, but large enough for adequate detail, and if you have a room you can devote to setting up your model railway layout, you can add on a lot of features because of this scale’s small size.
Some people prefer a model train with a little heft to it. O scale is a good choice because it’s big enough, but not too big. In fact, it is twice the size of the HO scale. An O scale engine is about the same weight as a brick, though somewhat longer and slimmer. The thing with O scale is that there are different track gauges that go with it, so you have to be somewhat careful, especially if you’re buying a second hand set.
G scale is a lot of fun because it’s big enough to run from room to room, and it’s especially fun to loop around a Christmas tree.
Model railway layouts run the gamut from a simple oval track to tracks that run between several different “landscapes” or model towns. And unless you’ve done something unsafe, there is no “wrong” layout. Some hobbyists only care to look at the train itself, and some get a kick out of elaborate landscapes. There’s plenty of room for both in the model railway community.
model railway layout