Thanks for the kind words all.
Yeah, this does look a little "unsettled" for dirt. I was thinking of doing some experimenting with the idea though, like laying some wax paper over the top and using a hot iron to maybe flatten it out a bit better. Not sure how it's going to work, so I don't want to do that with this base. But some time down the road a bit if I get a chance.
Cool! Can't wait to see what you can do with that bike. I have a few of them sitting around and just need some time, I want to do the same thing. Perhaps using this basing idea along with some fake plants/trees to make a neat little dio display.