Very interesting to watch, and a great first effort.
Some general feedback for you;
1. Those things on a fork are called 'tines'
2. I wouldn't worry too much about having you on screen past the intro. You're too small to really see when you're in the corner, but TBH we don't need to see you there at all once you start modelling ! I know a lot of people do like to remain on screen down small somewhere, but I have always wondered why ! I know you show the mouse later, but I reckon you should appear and go full screen for that.
3. Move the mic a little closer to your mouth (and make sure you are speaking perpendicular to the FRONT of it, not the end), to get less of the sound of the room in the recording (very minor issue - really am nitpicking there ! 🙂 )
4. Explanations are clear and I didn't struggle to follow anything you said. At times I thought you were speaking very slowly, but I appreciate how difficult it is to think, model and speak a non-native language all at the same time, so all respect there !
Also, for future tutorials, could you please show how Houdini tackles pure poly wrangling - making live path cuts on models, and moving individual points around etc etc - anyway, great job, and looking forward to seeing more of these !
CBR