HOW TO LINE UP CAMSHAFT SPROCKET AFTER CAM GEAR REMOVAL

See pic, with the age of car and miles replace the tensioner and spacer as well.

Using flat washer to prevent damage to tensioner body plug, place automatic tensioner in vise or arbor press. Compress tensioner rod until a pin can be inserted into tensioner rod through hole in tensioner body. Install tensioner with pin installed.
CAUTION:DO NOT exceed 2200 lbs (1000 kg) pressure on tensioner rod.

Ensure match marks on pulleys align with marks on heads. See Fig. 2. With upper idler pulley removed, install timing belt on pulleys. Keep slack toward automatic tensioner side. Install upper idler pulley. Rotate crankshaft twice in direction of rotation, and ensure match marks still align. Remove automatic tensioner pin, and repeat steps to confirm match marks are still in alignment.
Check timing belt deflection between right cam pulley and lower idler. Deflection should be. 20-. 28 "(5-7 mm) at 22 lbs. (10 kg). If deflection is not correct, repeat installation procedure. If deflection is still not correct, check for faulty automatic tensioner or stretched timing belt.
To complete installation, reverse removal procedure. Tighten fasteners to specification. See TORQUE SPECIFICATIONS. Adjust the drive belts to proper tension

Here is another pic that shows the dots for each cam I don't know why you took the sprocket off but you did so you'll have to guess or take it to a local guy.