What does your car's V5 certificate say for 'mass in running order' and 'max braked trailer weight' say?
Also look at the weight plate on the car (door pillar, possibly passenger side) and take the difference between the first 2 numbers of the set of four.
A caravan, which is a large box on wheels, is less stable on the road than a flat bed trailer carrying a ton of sand, so the recommendation is that a caravan's MTPLM is no more than 85% of the car's MIRO for a newbie at towing.
Please come back to us with the figures.
Edit - for an MTPLM of 1495 kg you would be looking for the car to have a MIRO of 1760 kg to stay within recommendations.