To be honest that is a lot easier when you are drawing someone who already exists, it is a lot harder for when you try to compose something from scratch. (There are obviously guides but getting it right...)
I'm obsessed now too. I'm exactly like Sherlock in how I can analyze things that quick, but I stutter, so it doesn't always come out the way I want it to. It astounds me how fast he can talk without stumbling.
I love how much detail you added to this,even to the last wrinkle on his scarf and the detail on his coat Your details of the coat makes me realize that Sherlock always looks his best when he wears his coat ^^.
This most certainly is one of my favorite pieces of Sherlock fanart. I love Sherlock when he is standing just outside of 221B Baker Street. I can't get over the detail in the coat, and how detailed you drew his hair.
Another amazing work! As always, you have done a wonderful job with the eyes. The detail in the coat and the scarf, especially the end of the scarf, is impressive. I love the original photo, but I really would have a hard time choosing between it and this beautiful art. You really captured the expression well. Lovely work!