Spray Painting a Sink and Counter Top?

Normally before you paint your countertop you need to do the work and prime it first and make sure it is really clean before you apply the first coat of paint to the countertop. One way to get around all of this is to not use a paintbrush when repairing your countertop but instead use a roller. If you roll on the paint with a roller you will get a much evener coat of paint and it won't be splotchy like it is right now. I am not sure how many times you have done this but doing it again and again over the top of the paint that you have already applied to the sink will not work. Each time you make an error you must strip off the paint that you have applied and start all over again. Just sanding down the areas and trying to spray paint again will leave more of a mess.

When spraying your counter you will always need to work from the back of the counter and move forward. Do not start at the front and work your way to the back because at the back of the counter you'll have a much heavier coat of paint and this can also cause you issues. One thing that works well is if you have some sort of work lights that put off a lot of heat-set them up in the bathroom and wait 15 minutes and apply a second coat of paint to the counter. Once you get the paint on correctly you will need to get some Krylon Clear Glaze. This needs to be applied 3 times to the top of the sink and you should wait about 10 minutes between coats.

Instructions using spray paint over a glossy finish makes it seem so easy, but, from past experience, I believe this is almost a fairy tale to many people. I have spray painted old wooden chairs, cabinets, tables, even metal stuff with no problems and most turned out okay (I am an amateur), but when I tackled an old shop refrigerator I found that nothing worked like the can described.

I think you need some help in deciding how to proceed from this point as you have not said what type of material your sink is made of and I believe that will make a difference.
I believe you should only be using tub & tile products if your top is the same type of material.
You are fortunate in that it looks like you are not using your sink so coats can have time to cure properly.

Maybe it's possible that your initial prep work was not good enough but the only thing that matters right now is; where do I go from here??

I believe you should take several pictures - even a couple of close-ups - and visit an Ace or True Value Hardware store so they can help you with this problem as both of these stores usually have knowledgeable people who will take the time necessary to help you.

They will know what questions to ask and probably have some leaflets on how to proceed.
Some contractor paint stores may help you but not all of these know about this type of work.
I have also seen helpful leaflets at Lowe's & Home Depot but I think you would benefit from a personal talk with a knowledgeable person.

I do not believe they will recommend a spray unless it is a sealer (when the job is finished).

I think you'll find you need one or two coats of primer (after prep work) before anything else is applied.

I have just the product for you , You can get this product called bathworks . It truly works! Click on the link and check reviews to see the finished product of others who have used this product.

This product can be used on porcelain, ceramic, fiberglass, plastic, steel, and tub/shower units. www.lowes.com/.../50239211? They also carry others!