Difficulty in using the telescope as a projector
Yes this is a bit more of a challenge! The first scope in the photo is long and thin and before the big square cardboard shadow-maker is put on it can be easily pointed at the Sun by moving the telescope until its shadow becomes a small circle, the minimum outline of the scope. If it's off a little bit that long tube's shadow will immediately change shape.
But with a short squat form factor your telescope won't be so easy. Start with the smallest magnification largest focal length eyepiece and at least try to use the shadow method of looking at the shadow that your telescope makes behind it (on something flat and held perpendicular to the Sun's direction, and move the scope around trying to make the most circular profile shadow. For this method, instead of a finder scope you can use an empty long thin tube to make a shadow.
Wait, you have a finder scope!
Eyepiece projection will work just as nicely for your finder scope as your main scope, so BEFORE you use it for the Sun, check that the finder is aligned to the main scope EITHER AT NIGHT or using TERESTRIAL OBJECTS on the ground. DON'T POINT IT AT THE SUN if there's any chance that you will look through it.
Those have to be distant objects so parallax doesn't lead to misalignment.
Once your finder scope is aligned to your main telescope, use eyepiece projection to get a nice centered image from it. At that point your main scope should be really close.