Don't do droopy eyes for classic or gothic, it's much more of a sweet thing and would look weird as heck.
Classic is usually more natural, no-makeup-make-up, pink or red-toned fairly natural lipstick or lipgloss, mascara, blusher, maybe light neutral eyeliner or eyeshadow. Foundation and concealer if you need it but no contouring (unless you have acne and are using foundation so heavily it looks mask-like without a subtle contour for dimension). I sometimes use highlighter if it's a sweeter look or something summery, but only to look natural and a bit dewy. Lightly filled but natural brows, no insta brows because they look fucking terrible with this style.
Gothic probably subtle pale foundation, eyeshadow and/or eyeliner is a must (black/grey/red/pink), red-toned lipstick or lipgloss, often heavier blusher. You can get away with a bit of cheek contour or draping for gothic but it's to look sunken, not tanned, and I wouldn't do it daily. Can do heavier brows as well but lolita brows are usually natural. If you're really comfortable in lenses you can use them for daily gothic without it looking too weird but don't go out of your way to use them. The bare minimum I do for gothic when I'm feeling lazy is BB cream, black mascara, black subtly winged liner (more normie but this is for daily), filled brows, something on lips. You can also get away with stuff like byojaku for a lot of more modern gothic stuff, if you want to look natural-ish but still match.
This is advice for light skintones because that's what I have, can't speak for others.