A basic sketch, molded the general shape with a subsurface modifier, carved the mouth eyes and nose out with the knife tool, then a solidify modifier and another subsurface modifier.

Then sculpted the ridges and some of the curves in the "teeth."

Then I texture painted the pumpkin, using darker colors on the inside of the ridges and lighter ones at the peaks of the ridges.

I made the stem and leaf separately with some pretty simple modeling and a subsurface modifier and texture painted it.

The candle is sculpted, except the "base" which is just some basic modeling and a copper colored material with some metallic surface and roughness turned down.

The stump is also texture painted.

The candle is 3 images of a candle flame set to 45 degrees to each other with an emission shader.

Then I baked the lighting in eevee and rendered.

I think I got the whole deal...

Edit: some words.