To improve your career prospects you need to study further, After Diploma you can go for lateral entry B.Arch programme. Career in Architecture is attractive, lucrative, and has lots of potential in terms of development. This field covers different works such as spatial design, safety management, aesthetics, material management, etc. To thrive in this field, you must possess certain skills and qualities like Creativity, Drawing, Plan drawing prowess, Plant interpretation and understanding, Sound Geometry and Mathematics knowledge.

If you are interested to opt the job option, Some career opportunities in architecture
Building surveyor.
Commercial/residential surveyor

Historic buildings inspector/conservation officer etc.

Good Luck!