Dungeon Objects in GIMP/Photoshop

[Jaxilon]

My workflow goes like this:
1. Draw it on paper
2. Scan it in
3. Open it in Gimp
4. Scrub the image getting rid of all the stupid white I get from scanning. I usually just create a new transparent layer then go select all the white on the scan and delete it. The paste the rest on the Transparent layer.
5. Image Autocrop the new Object
6. save as .gbr

When I get Tablet I'm sure I'll save a freakin ton of time by drawing it directly onto a transparent layer but for now that's how I do it.

Edit: I just learned Step 4 can be done by simply hitting Layers>Transparency>Color to Alpha. It leaves the lines and removes everything else.