While you are stitching:
Always wash your hands before stitching, and keep them clean while you work. Don't use hand lotion before stitching. Keep your hands out of your hair, off your face, out of the popcorn, away from the pizza and far from the chocolate bar.
Watch out for ink from highlighters, and toner from photocopies.
Needlework projects, especially those in scroll frames, make very nice cat beds. You may choose to view any fur that works its way into the project as part of the design. If not, try using a lint remover or tweezers.
Don't store linens or fine fabrics in plastic for the long term. The plastic can trap moisture and, over time, release chemicals. However, storing projects in plastic while they are in progress can help to keep them clean. This is assuming it takes less than 5 years to complete the project :-).
If you want to store a project-in-progress for a more than a few days, roll it rather than fold it. Wrap it in cloth, preferably white.
If you use a hoop, remove the project from the hoop after every stitching session.
Put your project in the hoop or bars backwards. This method is sometimes called having the project "in the well." It prevents the front of the design from touching anything when the bars are set down. It also provides more room on the back of the project for ending threads.
Try not to hold on to the project in a way that leaves your hand touching the front of the fabric. For example, fold any extra fabric forward and hold the project there. Some people like to use a layer of tissue, white flannel or plastic wrap on top of the project, with an opening in the center to stitch through. These can be fitted into a hoop, and provide something to hold onto.Pam Holmes suggested...
I am right handed and usually hold my work with my left hand. To prevent stains, I wear a white cotton glove on my left hand. It works wonders :) I just completed a bell pull (6 months of regular contact) and there were no dark stains lurking anywhere :}When you are done stitching:
Launder the project when completed, unless you used non-colorfast fabric or fibers. No matter how often you wash your hands before stitching there will be skin oils left which may cause stains and damage later on.
Avoid anything which cause the project to have long term (many year) exposure to chemicals.
Do not dry clean if at all possible. The chemicals can be gritty and may have long term effects. If the piece is lost at the cleaners, you will only be reimbursed for the cost of the materials. Some fabrics and fibers (wool and silk) may require dry cleaning. If this is the case, go to a very reputable cleaner, and have a long talk about the best way for them to do the cleaning.
Hand wash each piece individually in cold or lukewarm water. For extremely delicate objects, use room temperature distilled water.
To clean, use something which is pH balanced and has no whitening agents. This means something like Orvus paste (also used for washing horses and cows), Quilt Soap (which is Orvus soap packaged in small containers for people who don't need a gallon of it), Treasure Wash, etc. Orvus is actually a trade name for sodium lauryl sulfate. Try using one teaspoon per gallon of water. Do not use Woolite, strong detergents or chlorine bleach as they may make the colors bleed. Let the project soak for several minutes. Rinse thoroughly, but don't scrub or wring. If the colors run, repeat the process immediately until the water rinses clear.
Remove the piece from the water and place it on a clean, white, terry cloth towel. Roll it up like a jelly roll, to remove the excess water.
Unroll it while still damp, lay it face down on a couple of towels and iron with a dry iron at the wool or linen setting until it is dry. Try not to move the iron back and forth. You may use a pressing cloth, in fact you should use a pressing cloth if there are metallics. The process of ironing until dry prevents uneven drying and puckering of the cloth and threads. Let the project air dry another 24 hours before framing.
White vinegar or lemon juice.
1 teaspoon of bicarbonate of soda in 1/2 cup of cold water.
3-percent solution of peroxide. This could bleach the fabric, so only use it on whites