It's a globally accepted practice on FWD cars that the front wheels go back on same side and the rear ones cross over to the front. Also, depending upon the tyre wear pattern sometimes a simple front to back swap is prescribed and sometimes a cross is advised. So one prescription doesn't fit everytime. An experienced eye is a must in these matters. The guy from whom i got the alignment done took one look at the tyres and told me that i needed to cross the tyres. Another interesting thing he shared was that in the case of Punto it is an outright nightmare to align with puny tires. Especially the Punto with 165 tires. He was of the opinion that the Linea and Punto should have nothing less than 205 section tires. With those tires he claimed the settings come on perfect everytime and easily. Cheers.