In general at least 3 inch mat border is common for that size but a 4 inch will give it more of a gallery look and help set the artwork off from the frame and the rest of the wall more.
Common watercolor mat sizes.
Using a lighter mat on the outside and the darker on inside will help to direct the eye to the painting.
On our site you can create a frame up to 40 x 60 inches.
Cheap joe s art stuff offers a variety of matboards mounting board pre cut mats mounts and mat frames for framing and presenting your artwork.
Frames for unique print sizes.
It depends on the size of the frame the amount of space on your wall and how much you want to spend.
A 4 inch mat would result in a 24x24 inch picture frame.
Note that in many watercolor competitions they require a white mat so it is better to double mat in white.
When using two mats try to use complimentary colors for the strongest interest.
Our website s custom build a frame allows you to enter your artwork size and using these dimensions automatically calculates the recommended mat window opening and frame size.
Matting and framing your work matting your watercolors protects and enhances the look of your paintings by cleanly defining the image edges and isolating your image in a uniform neutral or complementary background.