The scene is colored with pencils, with a fine-tipped marker to color in the Frosty's Christmas Trees sign. The lights are colored with Spica pen, and the poles with silver gel pen.
To finish it off, I stamped the sentiment in Ranger Stream ink, and added a metal Christmas tree embellishment.

Here are the details on the image, linked to the Scribbles store:
#869 Frosty's Christmas Trees
This card is for these challenges:
November Rudolph Days -- anything Christmas
Craftyhazelnut's Christmas Challenge #309 -- use a sentiment
Craftyhazelnut's Christmas Challenge Extra
Word Art Wednesday #258 -- anything goes.