First, you are done a good job with your CRF design. It is a good structure and design, clear text, easy to read, and covers all of the variables.
I have some suggestions to improve your CRF. First, demographic data such as DoB, sex, rach will be moved to the visit1 screening section so your CRF will reduce redundancy. Moreover, to rid of more redundancy, you can merge physical examination in visit 1 enrollment to the screening section.
To increase accuracy in the screening section, the medical history will change with Yes/No questions because It is easy to fill up and not spending time reading the text. Also, the decimal should be added in the weight, especially in the body temperature data.