The most challenging question and statement a stylist or colorist can receive is: Can you correct this hair color I applied at home? It looks terrible! I personally love doing corrective hair coloring. A lot of hair stylist do not like this area of our field. Be sure your stylist has plenty of experience in this area of hair coloring if you need this service rendered. I really won't go too in depth here about corrective hair coloring, accept that, usually a botched at home color can be corrected with the following: Time at the salon for the correction. Money, as this service can be expensive. Cooperation with, and trust in, the hair stylist's or hair colorist's judgment.
One precaution: You can't paint with it in cold weather. The chemical reaction that transforms the water solution into a durable finish will not take place if the temperature is below 50°. (Conventional oil paints don't stick well in cold weather, either.)
OK, let's get started. Step one...supplies. You need a flat brush, a fan, a small detail brush and a couple of Filberts. A filbert is a rounded edge brush that lets you maneuver the paint easily without going outside the edges. Ultimately buy brushes that you like though, and make them work. Fans allow you to blend, for example. I use fans a lot and it's how I graduate color throughout my images. Everything I paint is by hand....no airbrushing or assistants. I want it to be an expression of me and nobody else. You also need an oil painting medium to mix with the oil paint to make it more fluid, and to speed or slow the drying process. Whichever you prefer. Go to the art store and don't be afraid to ask for help....they'll love helping you! A medium is merely an additive liquid which increases gloss, makes it flow easily, preserves the finish over time, keeps it from yellowing. I personally love Galkyd and Galkyd Lite. If that isn't available, buy a medium that looks like liquid amber and is kind of thick. Don't buy watery looking mediums....too hard to work with.
CONCLUSION. Once again go through the images and the story of the painting. Was your first impression different from what you see now? Take a 5-minute online test to explore your preferences in fine arts. In 5 minutes you will confidently say "I prefer impressionist cityscapes", or "This room calls for a color field painting", "I need to have an art nouveau nude in my bedroom" - and you will know what you are talking about!
Always use a sanding block for flat surfaces. Just your hand behind a thin piece of sand paper can leave grooves and low spots. It's also easier on your hands. For inside curves try wrapping the sand paper around a short section of garden or heater hose. This will help approximate the concave curve and help stay away from sanding through hard edges. On hard edges, like the top ridge of a fender or leading edge of a hood, you need to do this by hand. A sanding block will quickly dig right through the paint on a hard edge and take you down to bare metal. This means primer and more sanding.
Malabar and Designers Guild offer some striking brights while the new Shades of Sanderson comprises 120 colours tailored to Sanderson's collections. If you are aiming for a more subtle backdrop that will flow through several rooms, it's wise to stick to neutral shades. Kevin McCloud's Elements of Colour for Fired Earth works especially well with our cool, northern light.
How to Paint your Mustang or other Classic Car on a budget