I am not a professional. However, I believe you will need to use sandpaper to remove the paint you have applied. Then you need to use a fine grit sandpaper (higher number = finer grit) on the table. You might need to use BIN primer before painting. BIN is a shellac-based primer that encapsulates oil-based and water-based finishes and stains. Then try again with the paint. Use a good quality brush for wood projects, and paint "with the grain" of the wood = same direction as the "natural stripes" in the wood.
Other Houzzers will most likely add other tips. Take from this what is helpful.

A picture would be helpful, do you have one you can post? Without seeing the table my thought is that an initial coat of primer would have helped, and you should be using a brush rather than a roller.

Here are the pics

Oh thanks for the advice. At this moment I don't know what i can do.

It can take several coats of paint to get something like that looking good.

Don't panic, it can still be saved. For the record I'm not a professional either but I know a bit about painting stuff. Nasmijati is correct that you need to use sandpaper to roughen the surface a bit so the paint will stick. If you want the metal hinges and handle to be white too you'll need a spray can of Rustoleum paint. Metal takes a different kind of paint than wood. You can get it at a hardware or big box store.

Start by using a screwdriver to take the doors off at the hinges, then remove the hinges and handle completely. As noted above, you will spray them with Rustoleum paint. Read and follow the directions on the spray can.

All surfaces of the wood need to be lightly sanded then painted, being sure to get into all the crevices of your design. A brush is better suited to getting into the crevices. You should sand lightly between each coat of paint, and repeat until you have a finish you like.

The link below is to instructions on painting kitchen cabinets but the concept is the same, and there are how to videos that will give you visual assistance. You can do it, good luck!

http://www.diynetwork.com/how-to/repainting-kitchen-cabinets/index.html

Thank you everyone.
I have followed all your advice and nasmijati I did the sand before adding another paint of coat. I have bought a small angled brush. Oh and thanks for another tip Ispoildogs I want the hinges to maintain their origin colour. I will henceforth cover them.

I am just wondering if I should add primer now (since I did not use it before) Again thx if it turns out right I will upload foto

Thank you DIAspoton, the worker at the paint shop in Antwerp has not heard of chalk paint or did not understand my direct translation of "krijt verf"! The videos make painting look so easy.

Next time I will for sure remember the primer because when the white paint dried it looks Yellowish or a dirty white. I have decided to call in professional help before i ruin it any further.
Next project I will use all the advice from this forum

Please post a photo when your table is finished. :)

did you google 'chalk paint recipes' ? many mix plaster of paris with water til smooth, then add latex paint. some add a little vodka or denatured alcohol to help smooth it.
also google :annie sloan for painting videos. it really is so easy to do