Updating steam workshop

[Phanpy100]

i just released my first map on the steam workshop just to realise i put decals in the map instead of overlays, i can't find a guide on How to update a steam workshop item so what do i do? (If your wondering what the map is its koth_hillworks and will be getting a tf2maps release after i updated it)

 

[200]

Just hit "upload" in the ingame interface, same as uploading it for the first time

 

[Lampenpam]

decals in the map instead of overlays

If they look the same it's fine using them, in fact decals might take less resources. But if it looks a lot different then I wonder why you'd upload a map to the workshop you havn't even looked at.