I actually stamped the whole tree in Certainly Celery (the lighter colour in the leaves), and used my markers to colour the trunk with Chocolate Chip and some of the other leaves in Old Olive. Because Certainly Celery is a lighter colour than Chocolate Chip, I had no problems colouring over it with the marker. I used both ends of the marker, the brush tip and journaling tips, to colour the trunk. Some of the higher branches are quite fine and the brush tip would have coloured the leaves. 
And since i had my Pretties Kit out, I added a few more of the half pearls. You could have easily just added a bow or a knot in their place. I also used some of the Certainly Celery ribbon that was FREE last month. But there is a new promotion this month that I will post about either later today or tomorrow for you 🙂
ENJOY
Cardstock: Chocolate Chip, Old Olive, Whisper White, Close to Cocoa
Ink: Chocolate Chip, Close to Cocoa, Old Olive, Certainly Celery
Stamp Set: Thoughts & Prayers
Punches: Corner Rounder, Eyelet Border