Yeah, I copied it from the 2015 Spink Coins of England for quick reference. To be honest, a handful of pics like that probably aren't all that helpful to you. Perhaps better to check a dealer website that has a variety of stock and reasonable grading skills.
Also (I think) it's important to remember that strict grade (ie the amount of wear a coin has been subject to since it was made) isn't always the best measure with hammered coins. Individual variations can mean an unworn coin which was weakly struck is less appealing than one that was stronger and has circulated a bit. Then there's toning, how a coin compares to the usually encountered examples .. I (and a few people I know) tend to talk more about 'eye appeal' than grade with hammered coins.
The above shilling for example, is worn (easiest to see on the rim which can be almost sharp enough to cut your fingers on truly unworn coins) and is weak in places (such as the shoulder) where the flan is thinner. I grade quite strictly, if at all, and I guess I'd personally call it nVF if I was feeling generous (it was sold as VF). And it's also double struck (another challenge with hammered coins!) and has a flan split!
However the portrait is (fairly unusually) clear and it's pleasantly toned and on a nice broad round flan and so I like it better than other, more crisply struck or higher graded coins. For me it has good eye appeal. If that makes sense?