After lots of questions I finally made a video showing how I add additional depth using grey markers. To really show you the full effect I started with a very flat image colouring each section with only one tone. Normally I would colour the image with my light source in mind before finally adding the grey.
Here is a before and after image (so you can decide if you want to sit there for the next 10 minutes. heehee Might need a hot cuppa!)
The Garden Picket Fence is available here
if you wanted to sit down and practice whilst you watch.
And I have grey copic marker sets availble in store
I hope you manage to pick up some tips from this video. I would love to see any work you create using this technique.
Please DO leave a link to your project in the comments if you try this.
Hugs and take care always!