I use theatrical muslin - thin (helps while installing) and strong, inexpensive as well $8,00 per 108' wide. Also comes fire treated. After the mural is finished seal it with one coat of zinzer latex glaze (helps with installation, read below). Than snap chalk guide lines on the face of the mural follow the perimeter 1" bigger all around than the size of the actual wall. Make sure that snapped lines are vertical and horizontal (use snap line as a plumb bob). Roll the mural on the tube min 4 inch shorter than the height of the wall/mural and do not let the tube stick out - will get on the way while installing - will be hitting the floor or ceiling.

The important thing to discuss is the installation process.

Here we go: Traditional method - first apply wallpaper glue (may need two coats) to the wall let it sit there until becomes tacky then "hang" one layer of cheese cloth, wait for an hour (until dry) apply another coat of the same glue over the cheese cloth wait until tacky (may need two coats - all surface must be tacky - sometimes first coat dries too fast - appearing tacky in one corner but dry in the other) install your mural. Cheese cloth in-between the mural and the wall is placed for the mural to be removable, when the mural needs to be removed just pull the mural from the corner - cheese cloth will help it to separate (feels like removing masking tape). The murals in the White House are installed this way (use to be the union standard). White House murals were moved around during last remodeling.

The modern method skips the cheese cloth - you will need a removable (did not have it in the past) wallpaper glue from the wallpaper store.

Now the installation: you need a rubber wall paper roller $10 and couple of plastic wallpaper spatulas (kind of white rather thick and soft plastic) $1,50. You will need those to press the mural tight to the wall and push out the air bubbles - regular thing to happen, gaze coat will help you not to worry about scratching the mural with spatulas (do not use sharp edged spatulas - drywall plastic cheapies). Razor sharp utility knife - the kind you can snap the end off and off.

You will need 2-3+ people - depends on the size of the mural, When wall becomes tacky align the canvas using the vertical chalk guide lines going 1-1 1/2 inch over the line where the edge of the mural will have to be at the end of the install - it will shrink as dries (keep the mural on the roll!!) - same thing on the top and bottom of the mural - it will shrink about 1 inch on each side - more on really big murals but for those hire a mural hanging crew - there are such. Press the edge all the way down about 1- 1 1/2 feet, unroll another 2-3 feet keep the unrolled part away from the wall, have someone hold  attached area to the wall while unrolling next section, check the mural for the alignment (make sure chalk line guides run parallel to the floor/ceiling), press this 2-3 of the mural to the wall (use rubber roller and spatulas to run the air out), keep unrolling and pressing 2-3 feet at the time, watch not to leave air bubbles. When the whole mural is on the wall double check for bubbles - if any push them out with the spatula towards the nearest edge until gone. Wait for 20-30 min (by that time mural will shrink no more). Use the razor sharp knife to trim the access canvas along edges. You are done!

Now is the best advice I have ever got on this when I started: You have to have at least one person to help - do not ask your friend to do it in exchange for dinner - go to the brand name paint store and ask salesman for a wallpaper guy (not a company, unless you do not mind the cost) - all wall paper guys hung murals (if not fine art then photo murals - same thing). Hire him/her to do it with you - it will cost 100-200 bucks - worth 10 fold!

The whole install should take not more than 3-4 hours.

When installed, mural has the feel and look of the detailed oil painting. (there are a few little tricks during the painting process to achieve that)