Hi Melanie, increasing the image size, e.g. just scaling the image, will not work for getting a higher quality texture. if you scale textures, you have to redo them with much more image information and details. That will make the texture looking more realistic when doing closeups of your object this is a little wired imagine you have a 1000x1000 pixel sized image. if you are printing it out with a resolution of 500dpi (pixels per inch) you will receive a 2x2 inch print, small but very detailed and sharp thats why e.g. desktop publishers use up to 1GB sized images for printing a single brochure etc. in high quality