diff --git a/yadc/bp/auth.py b/yadc/bp/auth.py
index c1f202d..3376eab 100644
--- a/yadc/bp/auth.py
+++ b/yadc/bp/auth.py
@@ -17,13 +17,13 @@ def login():
     if request.method == 'POST' and form.validate():
         user = User.query.filter_by(username=form.username.data).first()
         if user is None or not user.check_password(form.password.data):
-            flash('Invalid username or password.')
+            flash('Invalid username or password.', category='error')
             return redirect(url_for('.login'))
 
         user.login(remember=form.remember_me.data)
         db.session.commit()
 
-        flash('Logged in as {}'.format(user.username))
+        flash(f'Logged in as {user.username}.')
 
         return redirect(nextpage())
 
diff --git a/yadc/bp/manage.py b/yadc/bp/manage.py
index 6e9a7d9..05e2380 100644
--- a/yadc/bp/manage.py
+++ b/yadc/bp/manage.py
@@ -84,10 +84,10 @@ def modify_user():
 
             if form.delete.data:
                 if el.is_current:
-                    flash("You can't just delete yourself.")
+                    flash("Your account can be deleted from profile settings page.", category='error')
                     return redirect(url_for('.manage_users'))
                 elif el.is_admin:
-                    flash("You can't just delete admins.")
+                    flash("You can't delete admins.", category='error')
                     return redirect(url_for('.manage_users'))
 
                 db.session.delete(el)
@@ -149,7 +149,7 @@ def modify_post():
                 el.approver = current_user
 
                 db.session.commit()
-                flash('Approved post {}'.format(str(el)))
+                flash('Approved post {}.'.format(str(el)))
                 # redirect(url_for('post.post_show', id=el.id))
 
     flasherrors(form)
diff --git a/yadc/bp/post.py b/yadc/bp/post.py
index 9ce8994..6e0ddd9 100644
--- a/yadc/bp/post.py
+++ b/yadc/bp/post.py
@@ -103,7 +103,7 @@ def comment():
             db.session.add(el)
 
             db.session.commit()
-            flash('Successfully submitted {}'.format(str(el)))
+            flash('Successfully submitted {}.'.format(str(el)))
             return redirect(url_for('post.post_show', id=form.post_id.data))
         else:
             el = Comment.query.filter_by(id=form.id.data).first()
@@ -142,7 +142,7 @@ def upload():
         db.session.add(post)
         db.session.commit()
 
-        flash('Successfully submitted {}'.format(str(post)))
+        flash('Successfully submitted {}.'.format(str(post)))
 
         return redirect(url_for('.posts'))
 
diff --git a/yadc/bp/user.py b/yadc/bp/user.py
index f137223..a1f8cd7 100644
--- a/yadc/bp/user.py
+++ b/yadc/bp/user.py
@@ -46,7 +46,7 @@ def change_pass():
     form = ChangePassForm(request.form)
     if form.validate():
         if not current_user.check_password(form.password_current.data):
-            flash('Incorrect password')
+            flash('Incorrect password.', category='error')
             return redirect(url_for('.settings'))
 
         current_user.create_password(form.password.data)
diff --git a/yadc/forms.py b/yadc/forms.py
index 2b43c07..3327f55 100644
--- a/yadc/forms.py
+++ b/yadc/forms.py
@@ -56,7 +56,7 @@ from PIL import Image
 def validate_file(form, field):
     file = request.files.get(field.name)
     if not file or file.filename == '':
-        raise ValidationError('Please select a file')
+        raise ValidationError('Please select a file.')
 
 class UploadForm(CSRFForm):
     post_img = FileField('Image', validators=[validate_file], render_kw={'required':''})
@@ -79,7 +79,7 @@ class UploadForm(CSRFForm):
         # flash(real_mimetype)
         # if client_mimetype != real_mimetype or client_mimetype not in ['image/png','image/jpeg']:
         if real_mimetype not in ['image/png','image/jpeg']:
-            raise ValidationError('Please select an image file of PNG or JPEG format')
+            raise ValidationError('Please select an image file of PNG or JPEG format.')
 
         try:
             Image.open(file).verify()
@@ -94,7 +94,7 @@ class UploadForm(CSRFForm):
 
         width, height = fileinfo['resolution']
         if width*height<1280*720 or width<720 or height<720:
-            raise ValidationError('Image has too low resolution, according to rules.')
+            raise ValidationError('Image has too low resolution.')
 
 # Change user section
 class ChangeUserInfoForm(CSRFForm):
diff --git a/yadc/utils.py b/yadc/utils.py
index 2bed73a..682209c 100644
--- a/yadc/utils.py
+++ b/yadc/utils.py
@@ -56,4 +56,4 @@ def flasherrors(form):
     for key,errs in form.errors.items():
         label = form.__getattribute__(key).label.text
         for err in errs:
-            flash('{}: {}'.format(label,err), category='error')
\ No newline at end of file
+            flash(f'{label}: {err}', category='error')
\ No newline at end of file