Like the others have said, there is definitely something missing in telling this story.
In general, I think the color and the weathering are unconvincing. I can understand taking a different path...
I just realized I need more coffee... I totally missed the cross hatch portion of your question which changes my reply a bit.
Draw it, scan it at a high enough resolution for the purposes you require,...
I'm deadline driven, the timeline is the first I ask about when discussing a project with a client. It's either feasible or it isn't and there is no point in discussing the project if the timeline isn't...