IF you are wanting to continue making videos, I would like to offer these suggestions:
Choose a topic and do at least 10 hours of research. Keep a list of the sources you used. Preferably some should be from books as well as from the net. Wikipedia is forbidden as a source.
Write an outline to organise your topics so they flow neatly from one to the next.
Write out a full script, and read it out loud so you know how it sounds. Make grammatical corrections as needed.
Write out a full list of props you will be using, and what points they will be correlated with.
Post your script, your prop list, and your sources here so that you can get constructive criticism. Review any advice given and make necessary changes. Post those changes as well until most everyone is okay with the information you intend to provide, and the format it will be in.
Choose a location to film. If in your house, choose a place where you will no be seeing furniture such as couches, chairs, beds, or appliances other than a light source (no sinks, stoves, tvs, etc). If choosing a location out of doors, avoid having your back to a street or buildings. Try to find somewhere with pleasant greenery and little sound interference. If your school will let you, borrow a classroom to make your videos in. It is a fairly professional looking setting, and you can have key points neatly bulleted on the chalk/white board. Have your props nearby or already in view, depending on what you will be talking about.
Start the video with a greeting... not with the camera shakily being turned on. It appears unprofessional. Invest in a tripod. Turn the camera on, and then use masking tape to mark the viewfinder boundries. This will form a box that will let you remain entirely in view at all times. When talking, try to maintain as much eye contact at the camera as possible. Read up on body language so that they viewer remains engaged. Speak clearly, concisely, and learn to project. I had the volume at max on my computer and could barely hear you in some of your videos. Check your lighting. Don't be backlit so we can't see you. Have multiple light sources so that no part of you is in deep shadow.
Be prepared to take multiple takes for videos, even videos on feeding. For those, bring multiple snakes so that you can feed one per take. This way, you can have distinct sections of video, with an edited it title screen about the points to be made in that section. It also allows you to edit out mistakes.
Keep yourself animated and excited about the subject, but don't let it have a negative impact on your speaking, your handling methods, or your video quality. A person who is clearly interested in their subject, who clearly wants to *teach* versus show off their knowledge, will also engage their viewer with greater ease.
At the end of each video provide a list of all sources and what points they related to so that people can check out your information after viewing the video.
I'll probably be able to think of more later, but this should be a good start I think.