Well, to get a clean cut of a figure is not realy that easy however wonderfull these tools are; some skill is needed. You should also consider that not every photo will be as good, a figure that is very similar to the background in color and tone will always be difficult to cut out. Even if you've got an ideal source, you'll still need to do some work to make it perfect. And how do you achieve perfection, work man! Of course the terrible thing is that even if others say your results are great, you will never be truely satisfied; but that is a different story.
Keep on trying, you'll only get better, and one word of advice: work at the highest resolution you can 300ppp at least; you can always downgrade once you've finished
Keep on trying, you'll only get better, and one word of advice: work at the highest resolution you can 300ppp at least; you can always downgrade once you've finished