Post a loco pic in one of the blogs.
Go to actions (beside reply)
Click Add Tag
Write the shed, type and number of the loco.
Click on your blog's ID (e.g. Entry# ABCDEFG) which...
more... will be on left side of Reply option.
Again go to actions
Click Add Loco Pic
If you have posted more than one pic, you will be asked to choose which pic to add else next step will automatically follow.
You'll see the pic selected, on the top of the box that opens
Click +Add beside the loco details and select appropriate check boxes
At the end there would be upload/Add option. Click that. TL will be created and you will have to wait for any TLM to confirm it