There are many parts to the unique Cardigan front. We want a prominent prosternum, well laid back shoulders, an upper arm length that is equal to the shoulder blade length and good ribbing that drops like the point of an egg between the front legs whose curve hugs/supports the chest. Forward/steep shoulders and very short upper arms on show/breeding stock are prevalent faults in today's Cardis.
Examples of correct fronts in the Cardigan Welsh Corgi.
Cornerstone's Ten Thousand Reasons
BGCH Cornerstone's Mercy Reigns
Cornerstone's Through Rough Waters
CH Conerstone's Assurance