coach

[pleng1221]

i make the 3D bus with solidworks, then rendering in photoshop7.[/img]

[theKeeper]

Welcome to the community pleng1221. [excited]

That's not bad.

Do you mean however that you 'composited' the image in Photoshop? The term 'rendered' is usually reserved as a reference to a 3D program; not 2D artwork. Just so you know. ;)

Just something to try...
You should try inverting the colour of the background or the bus pleng. It might help to provide a little more contrast to the piece. Try using lighter or darker shades of the inverted colour as well.

[pleng1221]

how about this one?

[pleng1221]

almost same kind, but from another perspective

[theKeeper]

That's fine too.
But what i meant was, change one or the other's colour. Not both. That just leads you back to having a limited colour scheme and a unidimensional looking effect. ;)

[Tron]

as well you try to turn on anti-aliasing when you render to get ride of the jagged edges.