Yes, it is possible to stretch a canvas on an already stretched canvas frame. This process is known as re-stretching and involves removing the existing canvas from the frame and replacing it with a new canvas. It is a common practice for artists who want to reuse a frame for a new artwork or for conservators who need to replace a damaged canvas. However, it is important to ensure that the frame is in good condition and suitable for re-stretching before attempting this process. **

It is generally not necessary to tighten a pre-stretched canvas, as it should already be stretched and primed for painting. However, if you notice any sagging or slackness in the canvas, you can use canvas keys (small wooden wedges) to tighten the canvas by inserting them into the corners of the frame and tapping them gently with a hammer. This can help to adjust the tension of the canvas and remove any slackness. Just be careful not to over-tighten the canvas, as this can cause it to warp or crack. **

Yes, it is possible to not erase a pencil on a stretched canvas by using light, gentle strokes when sketching out the initial drawing. This will minimize the visibility of the pencil marks and make it easier to cover them with paint. Additionally, using a kneaded eraser or a soft brush to gently lift off any excess graphite can help to reduce the visibility of the pencil marks without completely erasing them. Finally, using a light-colored ground or underpainting can also help to minimize the appearance of pencil marks on the canvas. **

It depends on the context. If you're asking about which animal I find more fascinating, I would choose the heron for its grace and beauty. However, if the question is about which animal I find more resilient and adaptable, I would choose the cockroach for its ability to survive in various environments. Both animals have unique characteristics that make them interesting in their own way. **

To cover a painted canvas with white, you can use white gesso, which is a primer specifically designed for preparing surfaces for painting. Apply a layer of white gesso over the painted canvas using a brush or a roller, making sure to cover the entire surface evenly. Allow the gesso to dry completely before applying additional layers if needed. Once the gesso is dry, you can paint over it with white acrylic or oil paint to achieve the desired result. **

To create a digital canvas, you can use various software tools such as Adobe Photoshop, Procreate, or Autodesk SketchBook. These programs allow you to create a new digital document with customizable dimensions and resolution, essentially providing you with a blank canvas to work on. You can then use digital brushes, pencils, and other tools to draw, paint, or design your artwork directly onto the digital canvas. Additionally, you can also import images, textures, and other elements to further enhance your digital creation. **

The white border around a stretched earlobe typically indicates that the skin is being stretched too thin, which can lead to potential issues such as tearing, blowouts, or thinning of the skin. It is a sign that the earlobe may be under too much stress from the stretching process. It is important to listen to your body and give your earlobes time to heal and rest in order to prevent any complications. **

The suitable canvas size for digital drawing depends on the intended use of the artwork. For detailed illustrations or prints, a canvas size of 3000x3000 pixels or higher is recommended to ensure high resolution. However, for sketches or web graphics, a smaller canvas size of 1000x1000 pixels may be sufficient. It is important to consider the final output and level of detail required when choosing a canvas size for digital drawing. **