Step 1: Clean up the old canvas.
The time has come to clean this canvas and start a new painting. What you're seeing here are two layers of my art that I've never really liked much. I've scraped off most of the textured layer (a straight pallet-knife works well). Once the loose texture is scraped off, I can then clean the canvas with a wet rag.
Step 2: Retexture the old canvas.
Once the canvas is clean and dry, I applied about $20 in gel medium to create a desirable texture. "Liquitex Gloss Super Heavy Gel Medium" works best for me.
Applying the gel medium is easy--you can use almost any kind of paint working tools such as a paint brush, or in this case, a pallet knife. I allowed the gel medium to dry fully, until totally transparent.
This medium is high quality and will not scrape off like the cheap stuff did in step 1.
Step 3: Spray paint a base coat
When I rework an old painting nothing looks better than to start with a clean white base coat. "Rust-oleium Satin" works well for this and you can find it at almost any hardware store.
I've found that a canvas is too distracting to repaint if my original work is showing through, so I coat it thoroughly (two coats should be enough).
Now this canvas is ready for another attempt at creating a masterpiece. The third time is a charm, wish me luck!