Looks pretty good for a first try!

Personally I'd say the anatomy needs some work, especially the shoulders look off. Also the folds on the trousers and the clothing tied to the waist looks off... too many folds on the wrong places. And if the trousers should be made of jeans fabric, they tend to make less and bigger folds as the fabric is stiffer and thicker than for example normal cotton fabric.

On the other hand, the shirt looks pretty good! Also, I like the hands. fingers might be a tad short, but really, the hands must be one of the hardest things to get right, and yours look almost perfect.

And finally: you finished it! That alone, for a first sculpt, is awesome!

Anatomy is off a bit, otherwise not a bad job at all.

Can't wait to see it in action!