Hi John,
Since you said you found it difficult to convert I thought I would give it a try on your image. If you don't care for these versions just say the word and I will delete them. I'm simply curious because I see that regular photos can be converted into art and drawings using photoshop.
1. Simply converted to B&W (playing with green, blue, orange and yellow sliders)
2. Artistic Filter - Brush Strokes - Angled - And then converted to B&W as above. (I tried the charcoal filter and it didn't work hence this effect instead.)