A little Gostek problem

[brawl56]

Hey guys!
Well I'm new here...so sorry if this is the wrong section for my question.. >.<
Soo... I'm currently making a little prawn (the aliens from District 9) Gostek and... yeah I've got all the bmp-parts in-game but everything looks so... "turned-around-and-will-not-fit"
Here's a little screenshot so you can see what's wrong... =/

So... how do I fix this... creepy little guy?

[Espadon]

Well here's how the gostek pieces are relative to the actual mesh. Dunno if this helps. Arrows indicate 'down.'

[croat1gamer]

Also, dont forget that the offsets are used from the top left corner of the sprites.

[brawl56]

Thanks guys!
@Espadon
Ok, I made everything like in your posted pic but it don´t worked.
So I took a sprite of a D9-Exosuit-thingy and adjusted them like the one before. I´ve also considered the maximum high and width of the parts (36x36 and 12x12).
And now I´ve got those...boxes around the parts:

[Espadon]

Well looks like something's not using correct color for background transparency? It should be 0:255:0.

Did you make any modifications to weapons?

[brawl56]

Ah, ok!
Yep, ok I found a nice mod for the game Codex Commander (didn´t even play it tough) with some nice weapon sprites and aaaaall this stuff. So I "converted" them for Soldat...well I´m currently on it
Here the mod:
Data Realms Dan Forums