for part one
1: a canvas
Now is the exciting bit.
Once you have finished you branch I suggest you add a couple of small twigs by oversewing them onto the already stitched canvas to give you a feel of how you are progressing
The wonderfull thing about this is that you don't need to finish one layer before starting on another. I have already suggested the adding of small twigs and now on the other branches I have added french knots and small circles of yellow and green fabric to represent lichen on the plainer branches along with some fabric ivy leaves
You will need to fill in the other branches in the same manner using whatever fabric you wish but not making any single piece bigger then one inch.