411 REFERENCE · Wikibooks
How to Frame a Picture/Tips for pastel drawings
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Tips for pastel drawings
Ensure that the drawing is well bonded to the backing with ?sealant?
Leave a gap at the bottom of the frame, between the paper and the matt, to allow for dust to settle inside the matt.