Here is a chance to be as interpretative and poetic as you can be. Make yourself clear. This should be a major part of your essay, more than one or two paragraphs. Use your new-found drawing and painting skills to illustrate your essay. Make at least two visual images.
Architecture needs to be covered with at least a plan and an elevation.
Two images is a minimum, use as many as you like to illustrate and amplify your written observations. As analyses, they should exaggerate those elements which have the dominant role in the image. Brevity is the soul of wit. Six to twelve pages of text is a fair guideline based on past performance. Footnote as necessary.