Make sure you do not block the screen. Move around if you must so that everyone has a chance to see everything. Handouts are a big help. Never apologize for your displays. Don t apologize for incomplete results.
Researchers understand that all research continues.
Just present the results and let the audience judge. It is ok to say that work is on-going . If you say I m sorry that work is not done , you invite the audience to tune out or wonder why you are talking at all.