crontab run sequentially

I have to run crontab in xvfb display mode forever when the system restarts... below is crontab code....

@reboot nohup Xvfb :1 -screen 0 1024x768x24 & export DISPLAY=":1"
@reboot /usr/bin/forever start -c /usr/bin/node test/app.js  

After the system reboots... I have to run both the commands sequentially. second command works умер... but i think Xvfb is not starting... if possible i want to run xvfb also in forever mode if it stops unexpectedly, how to fix this?

i have also tried running рукописный шрифт...

#!/bin/sh
/usr/bin/nohup Xvfb :1 -screen 0 1024x768x24 & 
export DISPLAY=":1";
/usr/bin/forever start -c /usr/bin/node test/app.js; 


@reboot start_me.sh