Artworks are grouped into periods or styles based on similarities that they share, for example a similar time of creation (for example, Medieval), a similar use of technique (for example, pointillism) or similar subject of depiction (for example, portraits).
I rate it a 9, you have some real talent! Keep working hard and you will for sure be going places!
(2×10)+(3×1)+(5/10) / Twenty three and five tenths