Uuuuh, have a tutorial type thing??
Sketch out a circular shape ((It doesn't matter how wonky it is as it isn't used for much UwU))
Sketch out the closest ear
Get a basic sketch for the start of his helmet ((I clean it up after this photo, but you could save that for later tbh-))
Now, sketch out a curvy line for the back of his head and neck
Ditch that circle because it'll make him look derpy, then start drawing an oval shape before making a triangle then a dash.* After you're satisfied which his top jaw, draw a curl right the end of the triangle and start of the dash before fading it into a line. ((*Note: For Silvally you want to finish the dash off with a Triangle without the bottom, much like the jaw. Since I'm drawing Valley I'm not including such.))
Now, make a diagonal line before creating a sharp triangle then go in and make two half squares before going into another sharp triangle ((Of Silvally it's all just half squares)Helmet time! Oof- it cut the top off but for that you just need to draw a rectangle like the last one before the curve, then draw a somewhat curved triangle* (Idk what it's called QwQ) ((*Silvally will have a rectangle -)) then go in and draw a diagonal line before transitioning into another rectangle. Then go through and draw parallel lines (They don't have to be perfect) on the top and bottom rectangle. After that go through and draw parallel lines on the curve((Between the second rectangle and last one)). to fill it in. Then finish it off by going back to the finale rectangle and curve in before curving out a tiny bit then drawing a line to connect it to the back of the neck. ((Note: Silvally actually has two so draw a triangle in the middle of the line then erase the leftover line, See Silvally|Valley, to get a better idea))
Details! I hope these come off self-explanatory because Idk how to explain them QwQ
Hope this helps someone-