Can't make edges of this mesh smooth!?

I’m trying to make this but in 3D.

And I cant make the edges smooth, they are sharp and ugly :mad:

How to I make the edges of the mesh I modeled smooth?
Forgive my insolence, I’m not that that good in blender.

You could use curves
Use the subsurf modifier and smooth shading. You will need to have a better mesh for this to give a proper result

you’re the best! Exactly what I needed!

Figure out how to do it in quads; that’ll help a lot, too. Then, as Richard said, you can use a subsurf to get it really smooth.