Without reloading the applicator, feather the edges by making light strokes that extend slightly past the edge onto the surrounding wall. Feathering creates a less noticeable transition between the new and old paint, which will help the touch-up spot blend into the wall.
Get as close of a color match as possible. Paint your touchup area but take the extra on your brush and ``dry brush'' it in a large area, 8-12 inches, around your touchup so the paint kind of fades out to the dry wall. It'll hide your touchup much better.
Basically, you're going to notice the touch-up spot, because it will stand out like a sore thumb. At corners, the walls, even when painted at the exact same time with the exact same paint, will look like different colors because of the angle at which the light is hitting them.
Make sure that all filled areas are rubbed down smooth and level. You will need to prime the filler before painting to prevent subsequent coats being absorbed more rapidly than on other areas.
When a paint flashing problem occurs during a touch-up or full-scale paint job, the best solution is to apply a second coat of paint -- applying it from one break to another. This method helps to diminish the noticeable distinction between the new finish and the old.
If your roller runs dry, you'll find yourself with uneven patches, leaving your walls looking inconsistent. Also resist the urge to rework wet paint and trust the process… it will look patchy whilst drying! Another common culprit in achieving a patchy effect is not maintaining a wet edge whist cutting in.
Make sure to use the same application method to apply touch-up paint as was used for the original paint job. Try to stick to just the spot that needs the touch-up paint so as not to draw more attention to the patch job. Another solution to paint being too light might simply be another coat of paint.
Painting a transparent color on top of a lighter layer can really help it pop. Additionally, you can paint over the transparent color a few times to increase the opacity even if it's on a darker background.
Apply Primer
Applying a primer is essential in ensuring an even base for your topcoat. Primer seals any previous streaks and imperfections, creating a uniform surface for the paint to adhere to. It also helps in achieving true color and maximum coverage with fewer coats of paint.
The larger patches show through because of differences in the texture of the surrounding wall, which has had several coats of paint applied over the years. So you have roller texture and smooth drywall patches.
A Brush is used for slightly bigger scratches than the Pen as they release a more generous amount of paint. If your car's coat has a rock chip or a pencil eraser sized scratch, use a car paint pen. If your car has chips or scratches that are the size of a quarter, use a Brush.
Brush marks are caused by strokes that leave the paint with a rough texture and visible brush strokes. The rough texture and visible brush strokes can be easily covered in a second coat of paint by using a slightly different technique than you used for your first coat.
With a paintbrush or roller (ideally the same application tool used for the original paint job), start with as little paint as possible, applying a very small amount at a time. Slowly roll or brush over the imperfection, making sure to start in the middle and apply the lightest amount of paint to the outer edges.
The main problem is that wicking will not occur at the same rate on a touch-up job versus the wicking rate of the original top coat. It is virtually impossible to reproduce the exact wicking rate, and this is why a touch-up job will often appear as a slightly different color than the original paint.
The problem could be with the paint you are using. It could be defective, old, or a low quality paint that doesn't cover well. Another option is to try priming an inconspicuous spot, let it dry, then paint over it to see if that helps. If so, go back and prime all the walls with a stain blocking primer.
Without primer, the touched-up spot will stand out, and it'll look a right mess. The trick is to blend the new paint with the original surface. Priming will also prep your surface for paint and seal any stains - especially those that wouldn't come off.
Tip #1: Extra coat of paint
Try another coat of paint. Just go over the areas where you see streaks and even them out with another coat, being careful this time not to apply the wrong type of pressure or fail to use enough paint on the roller, which is what created the streaks in the first place.
Try applying 3-4 coats of white gesso to your next blank canvas and see if that makes any difference in the strength of your colors when you paint. Another technique to make your paint more opaque is to add a small amount of white gesso or white paint.
Inconsistent Coverage Can Cause Paint Streaks
You should aim to use the same amount of paint every time you bring the paintbrush or roller brush back to the paint tray for more. By keeping the amount of paint you use consistent, you'll be keeping the amount of paint that goes up on the wall consistent, too.
Streaks, where paint is unevenly distributed on a wall, typically result from having too little paint on your roller or brush. What you'll need to fix paint drips, runs and streaks: Paintbrush. Razor.
Typically, touch-up coats will be lighter in color if they are applied when the temperature is 10 degrees cooler than the initial application. If the reverse is true, the touch-up coat will appear darker.
“Yes, applying a second coat of paint will usually make the colour appear darker and more saturated. This is because the second coat adds more pigment to the surface, reducing the amount of light that passes through the paint film.
Using a roller will help you to apply the new paint evenly, and it will blend in with the existing paint better.