oh ok! Always provide such info.... People would've helped you much earlier if you gave those extremely important info....
Ok back to the peachick: when the blood vessels in the membrane look empty and very pale pink, u can peel some more shell and still checking the newly covered membrane for any blood still in the veins of the shell... If you notice any bleeding stop messing with it and let it be... If it seems it absorbed the blood and therefore the yolk, then carefully tear the membrane towards the airsac and let him push himself out .... That's all i can say in short for now.(veryyyt sleepy it's 3 am here)... Read some more thread about helping chicks.... There are some very usefull stuff out there...
Good luck and update us