Let us break each one down for you and tell you how each system of knowledge can help you harbour good energies at your space.

Both are based on similar principals: 

Basis Both Vastu and Fengshui practices are based around powerful cosmic energies.  One of the major elements in both practices is that it is backed by mathematical calculations.

Dos & Don’ts : Both these practices believe in providing remedies by placing objects and tools to improve energies at home and work place.Eg: placing Buddha statues, hanging wind chimes and so on.Clutter around the home is something  that Both the practices clearly forbid.

Chi and Prana : The philosophies of feng shui are created around the flow of energies, called Chi in chinese culture  and Prana ( life ) in Hindu culture for vastu shastra.

Energy Fields : Both the practices believe that the centre of the home where  all  the energies combine, and thus, that makes it the most important part of the house. Both use the eight compass directions to determine placement and architecture, and five elements to attract positive energies.

Basis of principales : While vastu shastra is based on science and planetary positions and Fengshui is based more on geographical considerations.

Vastu use and believe based on Hindu symbols. and Fengshui uses wind chimes etc.symbols based on their geographical surroundings

Try using colors according to Vastu and FengShui. Also if you are looking for smaller or easier remedies, then try placing objects in the right spot or direction.

Have faith in the Power of positivity and lead a happy life!