It will take dedication, time & patience to get a six pack. You need to do two things: lose fat and build muscle. You get this by dieting & exercising consistently. You can have the most toned muscular abs, but it will not show if there is a layer of fat over them.
The basic 6 tips to have desired abs are:
1.Train abs heavy
2. Take small, frequent meals along with plenty of water
3. Must have breakfast as it is important meal of the day.
4. Do cardiovascular exercises regularly
5. Focus on building muscle in other areas of the body
6. Sleep well