I understand there are many ways to do this, this is my technique currently.
You will need these products, Golden Soft Gel and Golden Polymer Varnish with UVLS (Satin) and a Fixitive of your choice. You may want gloss varnish. These are clear, non-yellowing and flexible when dry and commonly used with collage.
Choose your paper and choose the base you will adhere it to.
I had a stash of purchased gesso primed 1/8 inch hardboard in various sizes, so that's what I used. My paper is what I love most, Arches 140 lb CP. If I like this I will experiement with heavier paper and other bases.
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1. Lay out all your supplies: WC paper that has been cut slightly larger than your hardboard, hardboard, Golden Soft Gel, a soft brush (preferably disposable). I had water and a wet rag nearby ready for anything. The soft Gel is really sticky so you might want gloves.
2. Lay a clean piece of matboard or other clean protectant on the table and lay your WC paper FACEDOWN onto the matboard.
3. Spread the Golden Soft Gel on the good (white) side of the hardwood panel and center it on the BACK side of your WC paper.
4. Weight it down. I have a smooth edge piece of glass I use for pressing WC's and I used this and put heavy books on top of it. Let it dry overnight.
5. With a utility knife, trim the edges; I did 3 of them with a new knife in 3 or 4 minutes by laying them on my quilting mat that is smooth and made for cutting. I put them in Clear Bags to protect them until I was ready to use.
6. You're ready to paint! You can do a pencil drawing or have it done prior to gluing. I can't imagine trying to line that up, - you decide. Dry the painting.
7. Lightly spray with a fixitive, I have Krylon, but there are several good ones. This step may be optional, I may experiement.
8. Put your varnish in a container that has room to add 1/4 to 1/3 volume of water to it before you apply it to the painting. Elevate the painting and let the varnish drip off as necessary. You will see tiny bubbles but they will disappear as it dries and levels. Do about 4 coats letting it dry overnight each time.
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