Download from URI in model error

        public static async Task DownloadFunction(List<Card> cards)
        {
            foreach (var card in cards)
            {
                byte[] fileBytes = await client.GetByteArrayAsync(card.ImageUris.Small);
                File.WriteAllBytes($@"C:\Users\samue\Desktop\MTGImages\{card.Root.name}", fileBytes);
            }
        }

Error    CS0120    An object reference is required for the non-static field, method, or property 'Card.ImageUris.Small'

Error    CS0572    'ImageUris': cannot reference a type through an expression; try 'Card.ImageUris' instead