Thanks
,
I have edited my bridge tile sprite:
I have gotten rid of the shadowing of the clouds,
as now that i look at it, i see that it is not needed.
I have also edited the pop-up turret (grey-saucer)
As for the main character, i was using the same technique as the NES game:
Jackie Chan Kung Fu Action, using a different outline colour for the main character to make him more out-standing.
(In-game screenshot taken from Jackie Chan Kung Fu Action) However i have changed the main character to an outline of black, and he is now alot more readable.