After a bit of playing around I figured out how you can create the closest representation of a changeling.

Changeling (Odo) Tutorial - to see a screenshot, and download pre-made changelings that you can load into your game.

Star off by creating a new Alien character and use the following settings:

Category: Humanoid
Head type: Humanoid 1
Skin Type: Skin, any color should be fine
Overall Pattern: Solid Color
Base Complexion: Saurian
Forehead Detail: None
Nose Detail: None
Tattoo, Scar, Etc. Options but None probably looks better
Eyes: Humanoid, any color
Ears: Humanoid
Earrings: Optional
Hairstyle: Receding Short
Eyebrow: None
Mouth Accessory: None
Eye Attach: Option, none probably looks better
Head Attach Organic: None

set the Brow Protrusion to about 2 and a half bars
set the Eyes Size to about 1 and a half bars

play around with the other settings until you are happy. I gave him a smaller than normal nose and mouth and also made him skinny,

You should say your own Odo.
He's about the only one that wasn't able to make himself look completely human, and in one episode involving a glimpse of his future self, he managed to.

Very good point, I put it in there. Thanks.

Well... technically you can say any character is a changeling

lol in that case everyone in STO is either a Changeling or a Undine, we're being invaded!! :p I know your point, I just wanted to see the closest thing possible to something that looked similar to Odo's looks

We really need to be able to get those Bajoran Militia uniforms...

The Bajoran Militia was probably disbanded when Bajor joined the Federation.

Those are coming. I remember a yellow name saying "We know you want those, and they are coming"

They should only be allowed if they implement a Bajoran playable faction (not a Bajoran playable skin for Federation faction, as it is now).

Otherwise it makes no sense.
The Feds didn't even allow wearing the Bajoran earring in their uniform code.
Let alone the whole uniform of another military organization.
.
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If only the screenshot wasn't a code 403.