Whilst I can’t grade, here are a few improvements I’d consider.
A thesis is just an introduction into your essay, so I wouldn’t worry about including the start of your point. For instance, ‘Shakespeare constructs guilt through motifs, religious references and the characters of Macbeth, and Lady Macbeth by demonstrating their mental destruction due to the guilt they experience.’
Also might be a good idea to include some context! Such as dates the play was first performed, it’s genre etc.
Sounds good!