Evenly burning match. Black
      head. Hot flame at a distance.

Evenly burning match

A match head gives off sparks.
      At this picture sparks are seen as light lines.
Sparks

At relatively long stage of even burning the flame is much less bright than at start of the burning.

Also unlike the start of burning at even burning the match doesn't give off sparks, and the most hot flame is at a distance from the match head.